Merge PR #1574 from ramox81/codex/attdef-parity: ATTDEF dialog, -ATTDEF, tag display, Properties and Block Definition ribbon

Conflicts with #1573: the locale files and the catalog take both PRs'
entries (one "Insertion Point" mapping kept); the Home and Insert Block
panels take #1574's layout with #1573's Insert Block gallery.

Cargo.toml

@@ -94,6 +94,7 @@ objc2-foundation = { version = "0.2", features = ["NSArray", "NSURL", "NSString"
 iced_core = { git = "https://github.com/iced-rs/iced.git", rev = "23604ff22ab0aad9e00b9327cb7b8546ed84db39" }
 iced_widget = { git = "https://github.com/iced-rs/iced.git", rev = "23604ff22ab0aad9e00b9327cb7b8546ed84db39" }
 
+
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 getrandom = "0.3"
 ocs_plugin_api = { path = "crates/ocs_plugin_api", features = ["host"] }

assets/ocad.pgp

@@ -65,6 +65,7 @@ PC,       *PASTECLIP
 
 ; ── Blocks / references ───────────────────────────────────────────────────
 ATT,      *ATTDEF
+-ATT,     *-ATTDEF
 BE,       *BEDIT
 IAT,      *IMAGEATTACH
 XA,       *XATTACH

locales/ar-SA/opencadstudio.ftl

@@ -4066,6 +4066,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = إنشاء
     .boolean = عمليات منطقية

locales/bg-BG/opencadstudio.ftl

@@ -4053,6 +4053,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Създаване
     .boolean = Булеви операции

locales/cs-CZ/opencadstudio.ftl

@@ -4051,6 +4051,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Vytvořit
     .boolean = Booleovské operace

locales/de-DE/opencadstudio.ftl

@@ -4052,6 +4052,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Erstellen
     .boolean = Boolesche Operationen

locales/el-GR/opencadstudio.ftl

@@ -4054,6 +4054,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Δημιουργία
     .boolean = Δυαδική πράξη

locales/en-US/opencadstudio.ftl

@@ -4055,6 +4055,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Create
     .boolean = Boolean

locales/es-ES/opencadstudio.ftl

@@ -4054,6 +4054,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Crear
     .boolean = Booleanas

locales/fi-FI/opencadstudio.ftl

@@ -4053,6 +4053,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Luo
     .boolean = Boolen operaatiot

locales/fr-FR/opencadstudio.ftl

@@ -4054,6 +4054,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Créer
     .boolean = Opérations booléennes

locales/hi-IN/opencadstudio.ftl

@@ -4042,6 +4042,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = बनाएँ
     .boolean = बूलियन संक्रियाएँ

locales/hu-HU/opencadstudio.ftl

@@ -4053,6 +4053,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Létrehozás
     .boolean = Logikai műveletek

locales/it-IT/opencadstudio.ftl

@@ -4053,6 +4053,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Crea
     .boolean = Operazioni booleane

locales/ja-JP/opencadstudio.ftl

@@ -4042,6 +4042,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = 作成
     .boolean = ブール演算

locales/ko-KR/opencadstudio.ftl

@@ -4053,6 +4053,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = 생성
     .boolean = 불리언 연산

locales/nl-NL/opencadstudio.ftl

@@ -4052,6 +4052,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Maken
     .boolean = Booleaanse bewerkingen

locales/pl-PL/opencadstudio.ftl

@@ -4053,6 +4053,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Utwórz
     .boolean = Operacje boolowskie

locales/pt-BR/opencadstudio.ftl

@@ -4054,6 +4054,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Criar
     .boolean = Operações booleanas

locales/ru-RU/opencadstudio.ftl

@@ -4055,6 +4055,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = Создание
     .boolean = Булевы операции

locales/tr-TR/opencadstudio.ftl

@@ -4014,6 +4014,27 @@ insert =
     .bp-block-no-reference = "__ocs_fmt_0__" bloğunun çizimde düzenlenecek bir başvurusu yok.
     .bp-block-referenced = "__ocs_fmt_0__" bloğu çizimde kullanılıyor, kaldırılamaz.
     .bp-block-removed = "__ocs_fmt_0__" bloğu kaldırıldı.
+    .attdef-on-screen = Ekranda belirt
+    .attdef-insertion-point = Ekleme Noktası
+    .attdef-insert-field = Alan ekle
+    .attdef-text-settings = Metin Ayarları
+    .attdef-align-below = Önceki öznitelik tanımının altına hizala
+    .attdef-define = Tanımla
+    .attdef-edit-title = Öznitelik Tanımını Düzenle
+    .attdef-edit-help = Bir öznitelik tanımının etiketini, istemini ve varsayılan değerini değiştirir.
+    .attdef-help = Bir öznitelik tanımlar: blok tanımına metin olarak yerleştirilen etiket, istem ve varsayılan değer.
+    .attdef-define-attributes = Öznitelik Tanımla
+    .attdef-manage-attributes = Öznitelikleri Yönet
+    .attdef-set-base-point = Taban Noktası Belirle
+    .attdef-attmode-retain = Öznitelik görünümünü koru
+    .attdef-attmode-all = Tüm öznitelikleri göster
+    .attdef-attmode-none = Tüm öznitelikleri gizle
+    .attdef-edit-attribute = Öznitelik Düzenle
+    .attdef-multiline-editor = Çok satırlı düzenleyici
+    .attdef-tag-empty = Etiket boş olamaz.
+    .attdef-tag-spaces = Etiket boşluk içeremez.
+    .attdef-positive = Değer pozitif ve sıfırdan farklı olmalı.
+    .attdef-angle = Geçerli bir sayısal açı veya ikinci nokta gerekir.
 model =
     .create = Oluştur
     .boolean = Boole işlemleri

locales/zh-CN/opencadstudio.ftl

@@ -4037,6 +4037,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = 创建
     .boolean = 布尔运算

locales/zh-TW/opencadstudio.ftl

@@ -4049,6 +4049,27 @@ insert =
     .bp-block-no-reference = Block "__ocs_fmt_0__" has no reference in the drawing to edit.
     .bp-block-referenced = Block "__ocs_fmt_0__" is referenced in the drawing and cannot be removed.
     .bp-block-removed = Block "__ocs_fmt_0__" removed.
+    .attdef-on-screen = Specify on-screen
+    .attdef-insertion-point = Insertion Point
+    .attdef-insert-field = Insert field
+    .attdef-text-settings = Text Settings
+    .attdef-align-below = Align below previous attribute definition
+    .attdef-define = Define
+    .attdef-edit-title = Edit Attribute Definition
+    .attdef-edit-help = Changes the tag, prompt and default value of an attribute definition.
+    .attdef-help = Defines an attribute: a tag, prompt and default value placed as text in a block definition.
+    .attdef-define-attributes = Define Attributes
+    .attdef-manage-attributes = Manage Attributes
+    .attdef-set-base-point = Set Base Point
+    .attdef-attmode-retain = Retain Attribute Display
+    .attdef-attmode-all = Display All Attributes
+    .attdef-attmode-none = Hide All Attributes
+    .attdef-edit-attribute = Edit Attribute
+    .attdef-multiline-editor = Multiline editor
+    .attdef-tag-empty = The tag cannot be empty.
+    .attdef-tag-spaces = The tag may not contain spaces.
+    .attdef-positive = Value must be positive and nonzero.
+    .attdef-angle = Requires valid numeric angle or second point.
 model =
     .create = 建立
     .boolean = 布林運算

src/app/alias.rs

@@ -80,7 +80,7 @@ const WEB_ALIAS_KEY: &str = "opencadstudio.aliases";
 /// migrated forward (see `introduced_at` / `migrate_aliases`). Version 1 shipped
 /// the pre-REDRAW table; version 2 introduced the REDRAW-family aliases; version 3
 /// introduced HB (HATCHTOBACK); version 4 introduced ER (EXTERNALREFERENCES).
-const DEFAULT_ALIASES_VERSION: u32 = 4;
+const DEFAULT_ALIASES_VERSION: u32 = 5;
 
 #[cfg(target_arch = "wasm32")]
 const WEB_ALIAS_VERSION_KEY: &str = "opencadstudio.aliases.version";
@@ -99,6 +99,7 @@ fn introduced_at(version: u32) -> &'static [(&'static str, &'static str)] {
         ],
         3 => &[("HB", "HATCHTOBACK")],
         4 => &[("ER", "EXTERNALREFERENCES")],
+        5 => &[("-ATT", "-ATTDEF")],
         _ => &[],
     }
 }

src/app/command_driver/entity_commit.rs

@@ -220,6 +220,12 @@ impl OpenCADStudio {
         // Record where this draw ended so ARC_CONT can continue from it
         // (before `entity` is moved into commit_entity).
         self.update_cont_anchor(&entity);
+        // ATTDEF's height becomes the next text height (TEXTSIZE), as TEXT's does.
+        if let codec::EntityType::AttributeDefinition(attribute) = &entity {
+            if self.tabs[i].active_cmd.as_ref().is_some_and(|cmd| cmd.name().ends_with("ATTDEF")) {
+                self.tabs[i].scene.document.header.text_height = attribute.height;
+            }
+        }
         let label = self.history_label_from_active_cmd(i, "ENTITY");
         let delta_safe = self.delta_add_safe(i, &entity);
         let pending = self.begin_undo(i, label, 1, delta_safe);

src/app/commands/attdef.rs

@@ -0,0 +1,359 @@
+//! ATTDEF (dialog), -ATTDEF (command line), AFLAGS, and the Edit Attribute
+//! Definition dialog opened by double-click / TEXTEDIT / DDEDIT.
+
+use crate::app::{Message, OpenCADStudio};
+use crate::command::CadCommand;
+use crate::modules::draw::draw::attdef::{
+    self as attdef, AttdefCommand, AttdefPickCommand, AttdefPlaceCommand, AttdefSpec, Justify,
+};
+use crate::ui::window::attdef_dialog::{
+    tag_error, AttdefDialogMsg, AttdefDialogState, AttdefEditState,
+};
+use iced::Task;
+
+fn short(v: f64) -> String {
+    let t = format!("{v:.4}");
+    t.trim_end_matches('0').trim_end_matches('.').to_string()
+}
+
+impl OpenCADStudio {
+    pub(super) fn dispatch_attdef(&mut self, cmd: &str, i: usize) -> Option<Task<Message>> {
+        if matches!(cmd, "ATTDEF" | "-ATTDEF") {
+            // Placement measures the tag with its style's font.
+            crate::entities::common::set_fixed_text_heights(&self.tabs[i].scene.document);
+        }
+        match cmd {
+            "ATTDEF" => {
+                self.open_attdef_dialog(i);
+                Some(Task::none())
+            }
+            "-ATTDEF" => {
+                let defaults =
+                    crate::scene::creation_style::current_text_defaults(&self.tabs[i].scene.document);
+                let styles: Vec<_> = self.tabs[i].scene.document.text_styles.iter().cloned().collect();
+                let command = AttdefCommand::new(
+                    "-ATTDEF",
+                    defaults.style_name,
+                    defaults.height,
+                    defaults.width_factor,
+                    defaults.oblique_angle,
+                    styles,
+                );
+                self.reset_command_start_state(i);
+                self.command_line.push_output(&command.intro());
+                self.command_line.push_info(&command.prompt());
+                self.tabs[i].active_cmd = Some(Box::new(command));
+                self.push_ucs_to_cmd(i);
+                Some(Task::none())
+            }
+            "ATTMODE0" => self.dispatch_draw("ATTDISP OFF", i),
+            "ATTMODE1" => self.dispatch_draw("ATTDISP NORMAL", i),
+            "ATTMODE2" => self.dispatch_draw("ATTDISP ON", i),
+            "_ATTDEF_VALUE" => {
+                let value = attdef::session().editor_value.take();
+                if let Some(state) = self.attdef_dialog.as_mut() {
+                    if let Some(value) = value {
+                        state.default = value;
+                    }
+                    self.active_modal = Some(crate::app::ModalKind::AttDef);
+                }
+                Some(Task::none())
+            }
+            cmd if cmd == "_ATTDEF_PICKED" || cmd.starts_with("_ATTDEF_PICKED ") => {
+                let mut parts = cmd.split_whitespace().skip(1);
+                if let (Some(kind), Some(value), Some(state)) =
+                    (parts.next(), parts.next(), self.attdef_dialog.as_mut())
+                {
+                    match kind {
+                        "H" => state.height = value.to_string(),
+                        "R" => state.rotation = value.to_string(),
+                        _ => state.width = value.to_string(),
+                    }
+                }
+                if self.attdef_dialog.is_some() {
+                    self.active_modal = Some(crate::app::ModalKind::AttDef);
+                }
+                Some(Task::none())
+            }
+            _ => self.dispatch_aflags(cmd),
+        }
+    }
+
+    /// AFLAGS: the session's attribute modes (0–63, default 16).
+    fn dispatch_aflags(&mut self, cmd: &str) -> Option<Task<Message>> {
+        let rest = cmd.strip_prefix("SETVAR ").map(str::trim).unwrap_or(cmd);
+        let mut parts = rest.splitn(2, char::is_whitespace);
+        if !parts.next().unwrap_or("").eq_ignore_ascii_case("AFLAGS") {
+            return None;
+        }
+        let current = attdef::session().aflags;
+        match parts.next().map(str::trim).filter(|v| !v.is_empty()) {
+            None => {
+                self.command_line
+                    .push_output(&format!("Enter new value for AFLAGS <{current}>:"));
+                self.pending_setvar = Some("AFLAGS".to_string());
+            }
+            Some(v) => match v.parse::<u8>().ok().filter(|v| *v <= 63) {
+                Some(v) => attdef::session().aflags = v,
+                None => {
+                    self.command_line.push_error("Requires an integer between 0 and 63.");
+                    self.command_line
+                        .push_output(&format!("Enter new value for AFLAGS <{current}>:"));
+                    self.pending_setvar = Some("AFLAGS".to_string());
+                }
+            },
+        }
+        Some(Task::none())
+    }
+
+    fn open_attdef_dialog(&mut self, i: usize) {
+        let document = &self.tabs[i].scene.document;
+        let defaults = crate::scene::creation_style::current_text_defaults(document);
+        let mut styles: Vec<String> = document
+            .text_styles
+            .iter()
+            .filter(|s| !s.name.is_empty())
+            .map(|s| s.name.clone())
+            .collect();
+        styles.sort_by_key(|s| s.to_lowercase());
+        let session = attdef::session();
+        self.attdef_dialog = Some(AttdefDialogState {
+            aflags: session.aflags,
+            annotative: session.annotative,
+            tag: String::new(),
+            prompt: String::new(),
+            default: String::new(),
+            justify: Justify::Left,
+            style: defaults.style_name,
+            styles,
+            height: short(defaults.height),
+            rotation: "0".into(),
+            width: "0".into(),
+            on_screen: session.on_screen,
+            coords: ["0".into(), "0".into(), "0".into()],
+            align_below: false,
+            can_align_below: session.last.is_some(),
+            error: None,
+        });
+        drop(session);
+        self.tabs[i].active_cmd = None;
+        self.active_modal = Some(crate::app::ModalKind::AttDef);
+    }
+
+    /// The Edit Attribute Definition dialog for `handle`.
+    pub(in crate::app) fn open_attdef_edit(&mut self, handle: codec::Handle) {
+        let i = self.active_tab;
+        let Some(codec::EntityType::AttributeDefinition(a)) = self.tabs[i].scene.document.get_entity(handle)
+        else {
+            return;
+        };
+        self.attdef_edit = Some(AttdefEditState {
+            handle,
+            tag: a.tag.clone(),
+            prompt: a.prompt.clone(),
+            default: a.default_value.clone(),
+            constant: a.flags.constant,
+            error: None,
+        });
+        self.active_modal = Some(crate::app::ModalKind::AttDefEdit);
+    }
+
+    pub(in crate::app) fn on_attdef_dialog(&mut self, m: AttdefDialogMsg) -> Task<Message> {
+        let i = self.active_tab;
+        if let Some(edit) = self.attdef_edit.as_mut() {
+            match m {
+                AttdefDialogMsg::EditTag(v) => edit.tag = v,
+                AttdefDialogMsg::EditPrompt(v) => edit.prompt = v,
+                AttdefDialogMsg::EditDefault(v) => edit.default = v,
+                AttdefDialogMsg::Help => self.command_line.push_info(
+                    crate::t!("Changes the tag, prompt and default value of an attribute definition.")
+                        .as_ref(),
+                ),
+                AttdefDialogMsg::EditOk => return self.attdef_edit_ok(i),
+                AttdefDialogMsg::DismissError => edit.error = None,
+                _ => {}
+            }
+            return Task::none();
+        }
+        let Some(state) = self.attdef_dialog.as_mut() else {
+            return Task::none();
+        };
+        match m {
+            AttdefDialogMsg::Mode(bit, on) => {
+                if on {
+                    state.aflags |= bit;
+                } else {
+                    state.aflags &= !bit;
+                }
+            }
+            AttdefDialogMsg::Annotative(v) => state.annotative = v,
+            AttdefDialogMsg::Tag(v) => state.tag = v,
+            AttdefDialogMsg::Prompt(v) => state.prompt = v,
+            AttdefDialogMsg::Default(v) => state.default = v,
+            AttdefDialogMsg::Justify(c) => state.justify = c.0,
+            AttdefDialogMsg::Style(v) => state.style = v,
+            AttdefDialogMsg::Height(v) => state.height = v,
+            AttdefDialogMsg::Rotation(v) => state.rotation = v,
+            AttdefDialogMsg::Width(v) => state.width = v,
+            AttdefDialogMsg::OnScreen(v) => state.on_screen = v,
+            AttdefDialogMsg::Coord(k, v) => state.coords[k] = v,
+            AttdefDialogMsg::AlignBelow(v) => state.align_below = v,
+            AttdefDialogMsg::PickHeight | AttdefDialogMsg::PickRotation | AttdefDialogMsg::PickWidth => {
+                let (kind, current) = match m {
+                    AttdefDialogMsg::PickHeight => ("H", state.height.clone()),
+                    AttdefDialogMsg::PickRotation => ("R", state.rotation.clone()),
+                    _ => ("W", state.width.clone()),
+                };
+                // Keep the dialog's fields; it reopens when the value is in.
+                self.active_modal = None;
+                let command = AttdefPickCommand::new(kind, current);
+                self.command_line.push_info(&command.prompt());
+                self.tabs[i].active_cmd = Some(Box::new(command));
+                self.push_ucs_to_cmd(i);
+                return self.focus_cmd_input();
+            }
+            AttdefDialogMsg::Help => self.command_line.push_info(
+                crate::t!("Defines an attribute: a tag, prompt and default value placed as text in a block definition.")
+                    .as_ref(),
+            ),
+            AttdefDialogMsg::Ok => return self.attdef_dialog_ok(i),
+            AttdefDialogMsg::DismissError => state.error = None,
+            AttdefDialogMsg::EditValue => {
+                // The dialog waits while the multi-line editor collects the value.
+                let initial = state.default.clone();
+                let height = state.height.trim().parse::<f64>().ok().filter(|h| *h > 0.0).unwrap_or(2.5);
+                self.active_modal = None;
+                attdef::session().editor_value = None;
+                self.tabs[i].active_cmd = Some(Box::new(attdef::AttdefValueCommand));
+                let pos = self.tabs[i].scene.camera.borrow().target;
+                return self.apply_cmd_result(crate::command::CmdResult::SuspendForMTextInput {
+                    pos,
+                    initial,
+                    height,
+                });
+            }
+            _ => {}
+        }
+        Task::none()
+    }
+
+    /// Show a validation message in the dialog; it stays open.
+    fn attdef_dialog_error(&mut self, error: &str) -> Task<Message> {
+        if let Some(state) = self.attdef_dialog.as_mut() {
+            state.error = Some(crate::t!(error).into_owned());
+        }
+        Task::none()
+    }
+
+    fn attdef_dialog_ok(&mut self, i: usize) -> Task<Message> {
+        let Some(state) = self.attdef_dialog.clone() else {
+            return Task::none();
+        };
+        if let Some(error) = tag_error(&state.tag) {
+            return self.attdef_dialog_error(error);
+        }
+        let number = |s: &str| s.trim().parse::<f64>().ok().filter(|v| v.is_finite());
+        let height = match number(&state.height) {
+            Some(v) if v > 0.0 => v,
+            _ => {
+                return self.attdef_dialog_error("Value must be positive and nonzero.");
+            }
+        };
+        let Some(rotation) = number(&state.rotation) else {
+            return self.attdef_dialog_error("Requires valid numeric angle or second point.");
+        };
+        let width = number(&state.width).unwrap_or(0.0).max(0.0);
+        let defaults =
+            crate::scene::creation_style::current_text_defaults(&self.tabs[i].scene.document);
+        let spec = AttdefSpec {
+            aflags: state.aflags,
+            annotative: state.annotative,
+            tag: state.tag.clone(),
+            prompt: state.prompt.clone(),
+            value: state.default.clone(),
+            justify: state.justify,
+            style: state.style.clone(),
+            height,
+            rotation: rotation.to_radians(),
+            width_factor: defaults.width_factor,
+            oblique_angle: defaults.oblique_angle,
+            boundary_width: width,
+            line_spacing: 1.0,
+        };
+        self.attdef_dialog = None;
+        self.close_active_modal();
+        {
+            let mut session = attdef::session();
+            session.aflags = spec.aflags;
+            session.annotative = spec.annotative;
+            session.on_screen = state.on_screen;
+        }
+        self.reset_command_start_state(i);
+        if state.align_below {
+            let previous = attdef::session().last.clone();
+            if let Some(previous) = previous {
+                let entity = attdef::build_below(&spec, &previous);
+                self.tabs[i].active_cmd = Some(Box::new(AttdefPlaceCommand::new(spec.clone())));
+                attdef::remember(&spec, &entity);
+                return self.apply_cmd_result(crate::command::CmdResult::CommitAndExit(entity));
+            }
+        }
+        let plane = if self.tabs[i].editing_model_space() {
+            self.tabs[i].ucs_xform().working_plane()
+        } else {
+            crate::command::WorkingPlane::default()
+        };
+        let mut command = AttdefPlaceCommand::new(spec);
+        command.set_working_plane(plane);
+        if state.on_screen {
+            self.command_line.push_info(&command.prompt());
+            self.tabs[i].active_cmd = Some(Box::new(command));
+            return self.focus_cmd_input();
+        }
+        let local = glam::DVec3::new(
+            number(&state.coords[0]).unwrap_or(0.0),
+            number(&state.coords[1]).unwrap_or(0.0),
+            number(&state.coords[2]).unwrap_or(0.0),
+        );
+        let result = command.on_point(plane.to_world(local));
+        self.tabs[i].active_cmd = Some(Box::new(command));
+        self.apply_cmd_result(result)
+    }
+
+    fn attdef_edit_ok(&mut self, i: usize) -> Task<Message> {
+        let Some(state) = self.attdef_edit.clone() else {
+            return Task::none();
+        };
+        if let Some(error) = tag_error(&state.tag) {
+            if let Some(edit) = self.attdef_edit.as_mut() {
+                edit.error = Some(crate::t!(error).into_owned());
+            }
+            return Task::none();
+        }
+        self.attdef_edit = None;
+        self.close_active_modal();
+        let changed = matches!(
+            self.tabs[i].scene.document.get_entity(state.handle),
+            Some(codec::EntityType::AttributeDefinition(a))
+                if a.tag != attdef::normalize_tag(&state.tag) || a.prompt != state.prompt || a.default_value != state.default
+        );
+        if changed && !self.reject_locked_edit(i, state.handle) {
+            self.push_undo_snapshot(i, "DDEDIT");
+            if let Some(codec::EntityType::AttributeDefinition(a)) =
+                self.tabs[i].scene.document.get_entity_mut(state.handle)
+            {
+                a.tag = attdef::normalize_tag(&state.tag);
+                if !a.flags.constant {
+                    a.prompt = state.prompt.clone();
+                }
+                a.default_value = state.default.clone();
+            }
+            self.tabs[i]
+                .scene
+                .bump_entities(&[(state.handle, crate::scene::ChangeKind::Modified)]);
+            self.tabs[i].dirty = true;
+            self.refresh_properties();
+        }
+        self.post_editor_closed(changed)
+    }
+}

src/app/commands/draw.rs

@@ -79,21 +79,6 @@ impl OpenCADStudio {
                 self.tabs[i].active_cmd = Some(Box::new(command));
             }
 
-            "ATTDEF" => {
-                use crate::modules::draw::draw::attdef::AttdefCommand;
-                let defaults = crate::scene::creation_style::current_text_defaults(
-                    &self.tabs[i].scene.document,
-                );
-                let cmd = AttdefCommand::with_text_defaults(
-                    defaults.height,
-                    defaults.style_name,
-                    defaults.width_factor,
-                    defaults.oblique_angle,
-                );
-                self.command_line.push_info(&cmd.prompt());
-                self.tabs[i].active_cmd = Some(Box::new(cmd));
-            }
-
             // Command-line attribute editing on selected Insert entities. Bare
             // ATTEDIT and the ATE alias launch the interactive editor instead
             // (see the ATTEDIT arm in the inquiry family); the dash form is the
@@ -198,68 +183,32 @@ impl OpenCADStudio {
                 }
             }
 
-            // ATTDISP — control attribute display visibility.
-            // ATTDISP ON   — make all AttributeDefinitions visible
-            // ATTDISP OFF  — make all AttributeDefinitions invisible
-            // ATTDISP NORMAL — restore: show only those without the invisible flag
+            // ATTDISP sets ATTMODE: 0 hides every attribute, 1 shows the
+            // visible ones, 2 shows them all. The definitions are not touched.
             "ATTDISP" => {
-                use crate::command::KeywordCommand;
-                let c = KeywordCommand::new(
-                    "ATTDISP",
-                    "ATTDISP  attribute display  [On / Off / Normal]:",
-                    vec![
-                        ("On", "ON", None),
-                        ("Off", "OFF", None),
-                        ("Normal", "NORMAL", None),
-                    ],
+                let command = crate::modules::draw::draw::attdef::AttdispCommand::new(
+                    self.tabs[i].scene.document.header.attribute_visibility,
                 );
-                self.command_line.push_info(&c.prompt());
-                self.tabs[i].active_cmd = Some(Box::new(c));
+                self.command_line.push_info(&command.prompt());
+                self.tabs[i].active_cmd = Some(Box::new(command));
             }
             cmd if cmd.starts_with("ATTDISP ") => {
-                let sub = cmd.split_whitespace().nth(1).unwrap_or("").to_uppercase();
-                match sub.as_str() {
-                    "ON" | "OFF" | "NORMAL" => {
-                        let handles: Vec<_> = self.tabs[i]
-                            .scene
-                            .document
-                            .entities()
-                            .filter_map(|entity| {
-                                matches!(entity, codec::EntityType::AttributeDefinition(_))
-                                    .then_some(entity.common().handle)
-                            })
-                            .filter(|handle| !self.tabs[i].scene.is_layer_locked(*handle))
-                            .collect();
-                        self.push_undo_snapshot(i, "ATTDISP");
-                        let mut count = 0usize;
-                        for handle in handles {
-                            if let Some(codec::EntityType::AttributeDefinition(ad)) =
-                                self.tabs[i].scene.document.get_entity_mut(handle)
-                            {
-                                match sub.as_str() {
-                                    "ON" => {
-                                        ad.flags.invisible = false;
-                                        count += 1;
-                                    }
-                                    "OFF" => {
-                                        ad.flags.invisible = true;
-                                        count += 1;
-                                    }
-                                    _ => {}
-                                }
-                            }
-                        }
-                        self.tabs[i].dirty = true;
-                        self.command_line.push_output(
-                            crate::tf!("ATTDISP {sub}: {count} attribute definition(s) updated.")
-                                .as_ref(),
-                        );
-                    }
+                let mode = match cmd[8..].trim().to_ascii_uppercase().as_str() {
+                    "OFF" => 0,
+                    "ON" => 2,
+                    "NORMAL" | "N" => 1,
                     _ => {
-                        self.command_line
-                            .push_info(crate::t!("Usage: ATTDISP ON | OFF | NORMAL").as_ref());
+                        self.command_line.push_error("Invalid option keyword.");
+                        return Some(Task::none());
                     }
+                };
+                if self.tabs[i].scene.document.header.attribute_visibility != mode {
+                    self.push_undo_snapshot(i, "ATTDISP");
+                    self.tabs[i].scene.document.header.attribute_visibility = mode;
+                    self.tabs[i].dirty = true;
+                    self.tabs[i].scene.bump_geometry();
                 }
+                self.command_line.push_output("Regenerating model.");
             }
 
             "DONUT" => {

src/app/commands/mod.rs

@@ -4,6 +4,7 @@ use crate::scene::Scene;
 use iced::Task;
 use std::path::PathBuf;
 
+mod attdef;
 mod blocks;
 mod xref_attach;
 mod dim;
@@ -288,6 +289,9 @@ impl OpenCADStudio {
         if let Some(t) = self.dispatch_pc_extract(cmd, i) {
             return Some(t);
         }
+        if let Some(t) = self.dispatch_attdef(cmd, i) {
+            return Some(t);
+        }
         if let Some(t) = self.dispatch_draw(cmd, i) {
             return Some(t);
         }
@@ -683,6 +687,9 @@ inventory::submit!(crate::command::CommandRegistration {
         "POINTCLOUDPOINTMAXLEGACY",
         "XCLIPFRAME",
         "WIPEOUTFRAME",
+        "ATTMODE0",
+        "ATTMODE1",
+        "ATTMODE2",
         "FRAMES0",
         "FRAMES1",
         "FRAMES3",

src/app/control/actions.rs

@@ -80,6 +80,7 @@ pub(super) const NAMES: &[&str] = &[
     "ribbon_tab",
     "ribbon_dropdown",
     "dialog_ok",
+    "attdef_dialog",
     "close_document",
     "toggle_properties",
     "toggle_layers",
@@ -931,6 +932,49 @@ impl OpenCADStudio {
                 }
                 return Ok(Task::none());
             }
+            // One field of the open attribute definition dialog: `tag=…`,
+            // `prompt=…`, `default=…`, `justify=MC`, `style=…`, `height=…`,
+            // `rotation=…`, `width=…`, `on_screen=0|1`, `x=…` / `y=…` / `z=…`,
+            // `mode=<bit>:0|1`, `annotative=0|1`, `align_below=0|1`, `edit_value`, `dismiss`.
+            "attdef_dialog" => {
+                use crate::ui::window::attdef_dialog::{AttdefDialogMsg as M, JustifyChoice};
+                let value = string(req, "value")?;
+                let (key, v) = value.split_once('=').unwrap_or((value, ""));
+                let on = v == "1";
+                let editing = self.active_modal == Some(crate::app::ModalKind::AttDefEdit);
+                Message::AttdefDialog(match key {
+                    "tag" if editing => M::EditTag(v.into()),
+                    "prompt" if editing => M::EditPrompt(v.into()),
+                    "default" if editing => M::EditDefault(v.into()),
+                    "tag" => M::Tag(v.into()),
+                    "prompt" => M::Prompt(v.into()),
+                    "default" => M::Default(v.into()),
+                    "style" => M::Style(v.into()),
+                    "height" => M::Height(v.into()),
+                    "rotation" => M::Rotation(v.into()),
+                    "width" => M::Width(v.into()),
+                    "on_screen" => M::OnScreen(on),
+                    "annotative" => M::Annotative(on),
+                    "align_below" => M::AlignBelow(on),
+                    "edit_value" => M::EditValue,
+                    "dismiss" => M::DismissError,
+                    "x" => M::Coord(0, v.into()),
+                    "y" => M::Coord(1, v.into()),
+                    "z" => M::Coord(2, v.into()),
+                    "justify" => M::Justify(JustifyChoice(
+                        crate::modules::draw::draw::attdef::Justify::from_keyword(v)
+                            .ok_or_else(|| failure("invalid_value", "Unknown justification"))?,
+                    )),
+                    "mode" => {
+                        let (bit, state) = v.split_once(':').unwrap_or((v, "1"));
+                        let bit = bit
+                            .parse::<u8>()
+                            .map_err(|_| failure("invalid_value", "mode=<bit>:0|1"))?;
+                        M::Mode(bit, state == "1")
+                    }
+                    _ => return Err(failure("invalid_value", "Unknown attdef dialog field")),
+                })
+            }
             "ribbon_dropdown" => Message::ToggleRibbonDropdown(string(req, "value")?.into()),
             "pdf_dialog_ok" => {
                 use crate::ui::window::pdf_dialogs::PdfDialogMsg;
@@ -951,6 +995,12 @@ impl OpenCADStudio {
                     crate::ui::window::xref_attach::XrefAttachMsg::Apply,
                 ),
                 Some(crate::app::ModalKind::BlockDefinition) => Message::BlockDefApply,
+                Some(crate::app::ModalKind::AttDef) => Message::AttdefDialog(
+                    crate::ui::window::attdef_dialog::AttdefDialogMsg::Ok,
+                ),
+                Some(crate::app::ModalKind::AttDefEdit) => Message::AttdefDialog(
+                    crate::ui::window::attdef_dialog::AttdefDialogMsg::EditOk,
+                ),
                 _ => return Err(failure("no_dialog", "No dialog with an OK button is open")),
             },
             "close_document" => Message::TabClose(self.tabs[self.active_tab].id),

src/app/mod.rs

@@ -498,6 +498,9 @@ pub(super) struct OpenCADStudio {
     /// PDF dialogs' working copies; `None` while closed.
     pdf_attach: Option<crate::ui::window::pdf_dialogs::PdfAttachState>,
     point_cloud_attach: Option<crate::ui::window::pdf_dialogs::PointCloudAttachState>,
+    /// ATTDEF dialog and Edit Attribute Definition dialog; `None` while closed.
+    attdef_dialog: Option<crate::ui::window::attdef_dialog::AttdefDialogState>,
+    attdef_edit: Option<crate::ui::window::attdef_dialog::AttdefEditState>,
     point_cloud_color_map: Option<crate::ui::window::pdf_dialogs::PointCloudColorMapState>,
     pc_section: Option<crate::ui::window::pdf_dialogs::PcSectionState>,
     underlay_layers: Option<crate::ui::window::pdf_dialogs::UnderlayLayersState>,
@@ -1926,6 +1929,8 @@ pub enum ModalKind {
     XrefAttach,
     WriteBlock,
     GeometricTolerance,
+    AttDef,
+    AttDefEdit,
     DraftingSettings,
     AutoConstrainSettings,
     LayerStateEditor,
@@ -3873,6 +3878,7 @@ pub enum Message {
     PdfImportPick,
     /// An edit in one of the PDF dialogs.
     PdfDialog(crate::ui::window::pdf_dialogs::PdfDialogMsg),
+    AttdefDialog(crate::ui::window::attdef_dialog::AttdefDialogMsg),
     /// A click or search in the Point Cloud Manager.
     PcManager(crate::ui::window::pc_manager::PcManagerMsg),
     PdfImportPickResult(Result<(std::path::PathBuf, std::sync::Arc<Vec<u8>>), String>),
@@ -4066,6 +4072,8 @@ impl OpenCADStudio {
             block_definition: None,
             pdf_attach: None,
             point_cloud_attach: None,
+            attdef_dialog: None,
+            attdef_edit: None,
             point_cloud_color_map: None,
             pc_section: None,
             underlay_layers: None,

src/app/text_inline.rs

@@ -155,6 +155,13 @@ impl super::OpenCADStudio {
             self.open_tolerance_dialog(Some(target));
             return iced::Task::none();
         }
+        if matches!(
+            self.tabs[i].scene.document.get_entity(target),
+            Some(EntityType::AttributeDefinition(_))
+        ) {
+            self.open_attdef_edit(target);
+            return iced::Task::none();
+        }
         // Snapshot what we need before borrowing `self` mutably to open.
         let Some(entity) = self.tabs[i].scene.document.get_entity(target) else {
             return iced::Task::none();

src/app/update/command.rs

@@ -3627,6 +3627,14 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                                 return Task::none();
                             }
                         }
+                        if field.starts_with("att_") {
+                            if let Err(message) =
+                                crate::entities::attribute::validate_definition_property(field, &val)
+                            {
+                                self.command_line.push_error(message);
+                                return Task::none();
+                            }
+                        }
                         if field.starts_with("ul_") {
                             if let Err(message) =
                                 crate::entities::underlay::validate_property(field, &val)

src/app/update/mod.rs

@@ -345,6 +345,12 @@ impl OpenCADStudio {
             _ => "FRAMES3",
         };
         self.ribbon.set_dropdown_current("FRAMES_DROPDOWN", current);
+        let attmode = match tab.scene.document.header.attribute_visibility {
+            0 => "ATTMODE0",
+            2 => "ATTMODE2",
+            _ => "ATTMODE1",
+        };
+        self.ribbon.set_dropdown_current("ATTMODE_DROPDOWN", attmode);
     }
 
     fn update_message(&mut self, msg: Message) -> Task<Message> {
@@ -1810,6 +1816,7 @@ impl OpenCADStudio {
             }
 
             Message::PdfDialog(message) => self.update_pdf_dialog(message),
+            Message::AttdefDialog(message) => self.on_attdef_dialog(message),
             Message::PcManager(message) => self.update_pc_manager(message),
             Message::RibbonSelectTab(idx) => {
                 self.ribbon.select(idx);
@@ -8497,6 +8504,15 @@ impl OpenCADStudio {
             }
 
             Message::CloseModal => {
+                if matches!(
+                    self.active_modal,
+                    Some(super::ModalKind::AttDef | super::ModalKind::AttDefEdit)
+                ) {
+                    self.attdef_dialog = None;
+                    let editing = self.attdef_edit.take().is_some();
+                    self.close_active_modal();
+                    return if editing { self.post_editor_closed(false) } else { Task::none() };
+                }
                 // Cancelling the section settings drops the waiting extraction.
                 if self.active_modal == Some(super::ModalKind::PcSection) {
                     crate::modules::insert::pc_extract::drop_job();

src/app/view/modal.rs

@@ -38,6 +38,8 @@ impl OpenCADStudio {
             Some(K::XrefAttach) => crate::t!("Attach External Reference").into_owned(),
             Some(K::WriteBlock) => crate::t!("Write Block").into_owned(),
             Some(K::GeometricTolerance) => crate::t!("Geometric Tolerance").into_owned(),
+            Some(K::AttDef) => crate::t!("Attribute Definition").into_owned(),
+            Some(K::AttDefEdit) => crate::t!("Edit Attribute Definition").into_owned(),
             Some(K::DraftingSettings) => crate::t!("Drafting Settings").into_owned(),
             Some(K::AutoConstrainSettings) => crate::t!("Constraint Settings").into_owned(),
             Some(K::LayerStateEditor) => crate::tr!("modal", "edit-layer-state"),
@@ -572,6 +574,14 @@ impl OpenCADStudio {
                     crate::ui::window::wblock::view_window(state, flow)
                 })
             }
+            super::super::ModalKind::AttDef => {
+                let state = self.attdef_dialog.as_ref()?;
+                sized_flow(ex, 720, 520, |flow| crate::ui::window::attdef_dialog::view(state, flow))
+            }
+            super::super::ModalKind::AttDefEdit => {
+                let state = self.attdef_edit.as_ref()?;
+                sized_flow(ex, 460, 220, |flow| crate::ui::window::attdef_dialog::view_edit(state, flow))
+            }
             super::super::ModalKind::GeometricTolerance => {
                 let state = self.geometric_tolerance.as_ref()?;
                 sized_flow(ex, 670, 530, |flow| {

src/entities/attribute.rs

@@ -101,7 +101,7 @@ fn mtext_flag_str(f: MTextFlag) -> &'static str {
 /// Render text strokes for an attribute, honouring alignment, oblique angle,
 /// width factor, generation flags (backward / upside-down), text-style
 /// resolution, and basic multiline splitting on `\n` / `\\P`.
-fn build_attr_render(input: AttrTextInputs<'_>, document: &codec::CadDocument) -> RenderEntity {
+fn build_attr_render(mut input: AttrTextInputs<'_>, document: &codec::CadDocument) -> RenderEntity {
     let normal = (input.normal.x, input.normal.y, input.normal.z);
     let (wsx, wsy, wsz) = transform::ocs_point_to_wcs(
         (
@@ -147,6 +147,37 @@ fn build_attr_render(input: AttrTextInputs<'_>, document: &codec::CadDocument) -
         resolved.oblique_angle
     };
 
+    // Align / Fit run the text along the baseline between the two points:
+    // Fit stretches its width, Align scales its height too.
+    let (mut rotation, mut width_factor) = (rotation, width_factor);
+    let span = (
+        input.alignment_point.x - input.insertion_point.x,
+        input.alignment_point.y - input.insertion_point.y,
+    );
+    let length = span.0.hypot(span.1);
+    if matches!(input.horizontal_alignment, AHA::Aligned | AHA::Fit)
+        && length > 1.0e-9
+        && !input.value.contains("\\P")
+    {
+        if let Some(b) = text_local_bounds(
+            &resolved.font_name,
+            &resolve_dxf_special_chars(input.value),
+            input.height as f32,
+            width_factor.abs(),
+            oblique_angle,
+        )
+        .filter(|b| b.advance > 1.0e-6)
+        {
+            let scale = length / b.advance as f64;
+            rotation = span.1.atan2(span.0) as f32;
+            if matches!(input.horizontal_alignment, AHA::Aligned) {
+                input.height *= scale;
+            } else {
+                width_factor *= scale as f32;
+            }
+        }
+    }
+
     // Anchor selection mirrors Text: only Left/Baseline uses insertion_point;
     // every other alignment uses alignment_point.
     let needs_align_pt = !(matches!(input.horizontal_alignment, AHA::Left)
@@ -339,17 +370,11 @@ fn build_attr_render(input: AttrTextInputs<'_>, document: &codec::CadDocument) -
 
 impl RenderConvertible for AttributeDefinition {
     fn to_render(&self, document: &codec::CadDocument) -> Option<RenderEntity> {
-        // An attribute definition previews its tag when it has no default
-        // value, so the placeholder is visible where a block will prompt for
-        // input. (Passed as a non-empty value, so it renders as-is.)
-        let display_value = if self.default_value.is_empty() {
-            self.tag.clone()
-        } else {
-            self.default_value.clone()
-        };
+        // A definition shows its tag; the value appears only on the block
+        // references (block content renders a constant one's value itself).
         Some(build_attr_render(
             AttrTextInputs {
-                value: &display_value,
+                value: &self.tag,
                 insertion_point: self.insertion_point,
                 alignment_point: self.alignment_point,
                 height: self.height,
@@ -361,82 +386,262 @@ impl RenderConvertible for AttributeDefinition {
                 horizontal_alignment: self.horizontal_alignment,
                 vertical_alignment: self.vertical_alignment,
                 normal: self.normal,
-                mtext_flag: self.mtext_flag,
-                is_multiline: self.is_multiline,
-                line_count: self.line_count,
+                // The tag is one line even on a multi-line definition.
+                mtext_flag: MTextFlag::SingleLine,
+                is_multiline: false,
+                line_count: 1,
             },
             document,
         ))
     }
 }
 
+fn is_plain_left(a: &AttributeDefinition) -> bool {
+    a.is_multiline
+        || matches!(
+            (a.horizontal_alignment, a.vertical_alignment),
+            (AHA::Left, AVA::Baseline)
+        )
+}
+
+fn is_two_point(a: &AttributeDefinition) -> bool {
+    !a.is_multiline && matches!(a.horizontal_alignment, AHA::Aligned | AHA::Fit)
+}
+
+fn dv(p: Vector3) -> glam::DVec3 {
+    glam::DVec3::new(p.x, p.y, p.z)
+}
+
+fn shift(p: &mut Vector3, d: glam::DVec3) {
+    p.x += d.x;
+    p.y += d.y;
+    p.z += d.z;
+}
+
 impl Grippable for AttributeDefinition {
+    /// Left text has one grip at its start; every other justification adds
+    /// the alignment point. Lock position only pins attributes on block
+    /// references, never the definition itself.
     fn grips(&self) -> Vec<GripDef> {
-        // lock_position blocks the position grip. Show an empty grip set so
-        // the renderer can't drag the entity in either AttributeFlags or
-        // top-level lock_position is on.
-        if self.lock_position || self.flags.locked_position {
-            return vec![];
+        let mut grips = vec![square_grip(0, dv(self.insertion_point))];
+        if !is_plain_left(self) {
+            grips.push(square_grip(1, dv(self.alignment_point)));
         }
-        vec![square_grip(
-            0,
-            glam::DVec3::new(
-                self.insertion_point.x,
-                self.insertion_point.y,
-                self.insertion_point.z,
-            ),
-        )]
+        grips
     }
 
     fn apply_grip(&mut self, grip_id: usize, apply: GripApply) {
-        if self.lock_position || self.flags.locked_position {
+        let current = if grip_id == 1 { self.alignment_point } else { self.insertion_point };
+        let d = match apply {
+            GripApply::Translate(d) => glam::DVec3::new(d.x as f64, d.y as f64, d.z as f64),
+            GripApply::Absolute(p) => glam::DVec3::new(p.x as f64, p.y as f64, p.z as f64) - dv(current),
+        };
+        // A two-point definition stretches the moved endpoint; any other
+        // grip moves the whole text.
+        if is_two_point(self) {
+            if grip_id == 1 {
+                shift(&mut self.alignment_point, d);
+            } else {
+                shift(&mut self.insertion_point, d);
+            }
             return;
         }
-        if grip_id == 0 {
-            match apply {
-                GripApply::Translate(d) => {
-                    self.insertion_point.x += d.x as f64;
-                    self.insertion_point.y += d.y as f64;
-                    self.insertion_point.z += d.z as f64;
-                    self.alignment_point.x += d.x as f64;
-                    self.alignment_point.y += d.y as f64;
-                    self.alignment_point.z += d.z as f64;
-                }
-                GripApply::Absolute(p) => {
-                    self.insertion_point.x = p.x as f64;
-                    self.insertion_point.y = p.y as f64;
-                    self.insertion_point.z = p.z as f64;
-                    self.alignment_point.x = p.x as f64;
-                    self.alignment_point.y = p.y as f64;
-                    self.alignment_point.z = p.z as f64;
-                }
-            }
+        shift(&mut self.insertion_point, d);
+        shift(&mut self.alignment_point, d);
+        if let Some(m) = self.embedded_mtext.as_mut() {
+            shift(&mut m.insertion_point, d);
         }
     }
 }
 
+const JUSTIFY_OPTIONS: [&str; 15] = [
+    "Left",
+    "Align",
+    "Fit",
+    "Center",
+    "Middle",
+    "Right",
+    "Top left",
+    "Top center",
+    "Top right",
+    "Middle left",
+    "Middle center",
+    "Middle right",
+    "Bottom left",
+    "Bottom center",
+    "Bottom right",
+];
+
+fn justify_label(a: &AttributeDefinition) -> &'static str {
+    match (a.horizontal_alignment, a.vertical_alignment) {
+        (AHA::Aligned, _) => "Align",
+        (AHA::Fit, _) => "Fit",
+        (AHA::Middle, _) => "Middle",
+        (AHA::Left, AVA::Baseline) => "Left",
+        (AHA::Center, AVA::Baseline) => "Center",
+        (AHA::Right, AVA::Baseline) => "Right",
+        (AHA::Left, AVA::Top) => "Top left",
+        (AHA::Center, AVA::Top) => "Top center",
+        (AHA::Right, AVA::Top) => "Top right",
+        (AHA::Left, AVA::Middle) => "Middle left",
+        (AHA::Center, AVA::Middle) => "Middle center",
+        (AHA::Right, AVA::Middle) => "Middle right",
+        (AHA::Left, AVA::Bottom) => "Bottom left",
+        (AHA::Center, AVA::Bottom) => "Bottom center",
+        (AHA::Right, AVA::Bottom) => "Bottom right",
+    }
+}
+
+fn parse_justify(s: &str) -> Option<(AHA, AVA)> {
+    Some(match s {
+        "Left" => (AHA::Left, AVA::Baseline),
+        "Align" | "Aligned" => (AHA::Aligned, AVA::Baseline),
+        "Fit" => (AHA::Fit, AVA::Baseline),
+        "Center" => (AHA::Center, AVA::Baseline),
+        "Middle" => (AHA::Middle, AVA::Baseline),
+        "Right" => (AHA::Right, AVA::Baseline),
+        "Top left" => (AHA::Left, AVA::Top),
+        "Top center" => (AHA::Center, AVA::Top),
+        "Top right" => (AHA::Right, AVA::Top),
+        "Middle left" => (AHA::Left, AVA::Middle),
+        "Middle center" => (AHA::Center, AVA::Middle),
+        "Middle right" => (AHA::Right, AVA::Middle),
+        "Bottom left" => (AHA::Left, AVA::Bottom),
+        "Bottom center" => (AHA::Center, AVA::Bottom),
+        "Bottom right" => (AHA::Right, AVA::Bottom),
+        _ => return None,
+    })
+}
+
+/// Offset of the justification anchor from the baseline start, in the
+/// text's own frame (the shown tag measured with its style's font).
+fn justify_offset(a: &AttributeDefinition) -> Option<(f64, f64)> {
+    let b = text_local_bounds(
+        &crate::entities::common::style_font(&a.text_style),
+        &a.tag,
+        a.height as f32,
+        a.width_factor as f32,
+        a.oblique_angle as f32,
+    )?;
+    let ax = match a.horizontal_alignment {
+        AHA::Left => 0.0,
+        AHA::Center | AHA::Middle => b.advance as f64 * 0.5,
+        AHA::Right | AHA::Aligned | AHA::Fit => b.advance as f64,
+    };
+    let ay = match a.vertical_alignment {
+        AVA::Baseline => 0.0,
+        AVA::Bottom => b.ink_min[1] as f64,
+        AVA::Middle => (b.ink_min[1] + b.ink_max[1]) as f64 * 0.5,
+        AVA::Top => b.ink_max[1] as f64,
+    };
+    Some((ax, ay))
+}
+
+fn rotate(a: &AttributeDefinition, (x, y): (f64, f64)) -> (f64, f64) {
+    let (sin, cos) = a.rotation.sin_cos();
+    (x * cos - y * sin, x * sin + y * cos)
+}
+
+/// The baseline start a justified definition stores as its insertion point
+/// (the alignment point minus the justification offset).
+pub fn definition_text_start(a: &AttributeDefinition) -> Vector3 {
+    let Some(offset) = justify_offset(a) else {
+        return a.alignment_point;
+    };
+    let (dx, dy) = rotate(a, offset);
+    let p = a.alignment_point;
+    Vector3::new(p.x - dx, p.y - dy, p.z)
+}
+
+fn yes_no(flag: bool) -> PropValue {
+    PropValue::Choice {
+        selected: if flag { t!("Yes") } else { t!("No") }.into_owned(),
+        options: vec![t!("Yes").into_owned(), t!("No").into_owned()],
+    }
+}
+
+fn is_yes(value: &str) -> bool {
+    value == t!("Yes").as_ref() || value.eq_ignore_ascii_case("yes")
+}
+
+fn row(label: &str, field: &'static str, value: PropValue) -> Property {
+    Property { label: label.into(), field, value }
+}
+
+fn set_bit(flags: i16, bit: i16, on: bool) -> i16 {
+    if on {
+        flags | bit
+    } else {
+        flags & !bit
+    }
+}
+
+/// What the Properties palette refuses for a definition, with the message
+/// the reference shows.
+pub fn validate_definition_property(field: &str, value: &str) -> Result<(), &'static str> {
+    match field {
+        "att_tag" if value.trim().is_empty() || value.trim().contains(char::is_whitespace) => {
+            Err("Invalid argument Tag in setting TagString")
+        }
+        "att_h" | "att_wf" if !parse_f64(value).is_some_and(|v| v > 0.0) => Err("Invalid input"),
+        _ => Ok(()),
+    }
+}
+
+/// Multiple lines on: the value moves into an embedded MText anchored at the
+/// start point. Off: back to single-line Left text.
+fn set_multiline(a: &mut AttributeDefinition, on: bool) {
+    if on == a.is_multiline {
+        return;
+    }
+    a.is_multiline = on;
+    if on {
+        a.mtext_flag = MTextFlag::ConstantMultiLine;
+        a.horizontal_alignment = AHA::Left;
+        a.vertical_alignment = AVA::Top;
+        a.alignment_point = a.insertion_point;
+        a.line_count = a.default_value.split("\\P").count().max(1) as i16;
+        let mut mtext = codec::entities::MText::new();
+        mtext.value = a.default_value.clone();
+        mtext.insertion_point = a.insertion_point;
+        mtext.height = a.height;
+        mtext.rotation = a.rotation;
+        mtext.style = a.text_style.clone();
+        a.embedded_mtext = Some(Box::new(mtext));
+    } else {
+        a.mtext_flag = MTextFlag::SingleLine;
+        a.horizontal_alignment = AHA::Left;
+        a.vertical_alignment = AVA::Baseline;
+        a.line_count = 1;
+        a.default_value = a.default_value.replace("\\P", " ");
+        a.embedded_mtext = None;
+    }
+}
+
 impl PropertyEditable for AttributeDefinition {
     fn geometry_properties(&self, text_style_names: &[String]) -> Vec<PropSection> {
-        let mut text_props = vec![
-            Property {
-                label: t!("Tag").into_owned(),
-                field: "att_tag",
-                value: PropValue::PlainText(self.tag.clone()),
+        let left = is_plain_left(self);
+        // Text alignment is the anchor of every justification but Left.
+        let alignment = |label: std::borrow::Cow<'static, str>, field: &'static str, v: f64| {
+            if left {
+                ro(label.as_ref(), field, String::new())
+            } else {
+                edit(label.as_ref(), field, v)
+            }
+        };
+        let text_props = vec![
+            row(t!("Tag").as_ref(), "att_tag", PropValue::PlainText(self.tag.clone())),
+            row(t!("Annotative").as_ref(), "att_annotative", yes_no(self.flags.annotative)),
+            if self.flags.constant {
+                ro(t!("Prompt").as_ref(), "att_prompt", self.prompt.clone())
+            } else {
+                row(t!("Prompt").as_ref(), "att_prompt", PropValue::PlainText(self.prompt.clone()))
             },
-            Property {
-                label: t!("Prompt").into_owned(),
-                field: "att_prompt",
-                value: PropValue::PlainText(self.prompt.clone()),
-            },
-            Property {
-                label: t!("Value").into_owned(),
-                field: "att_default",
-                value: PropValue::PlainText(self.default_value.clone()),
-            },
-            Property {
-                label: t!("Style").into_owned(),
-                field: "att_style",
-                value: PropValue::Choice {
+            row(t!("Value").as_ref(), "att_default", PropValue::PlainText(self.default_value.clone())),
+            row(
+                t!("Style").as_ref(),
+                "att_style",
+                PropValue::Choice {
                     selected: if self.text_style.trim().is_empty() {
                         "Standard".into()
                     } else {
@@ -444,33 +649,18 @@ impl PropertyEditable for AttributeDefinition {
                     },
                     options: text_style_names.to_vec(),
                 },
-            },
-            ro(
-                t!("Annotative").as_ref(),
-                "att_annotative",
-                bool_yn(self.flags.annotative),
             ),
-            Property {
-                label: t!("Justify").into_owned(),
-                field: "att_halign",
-                value: PropValue::Choice {
-                    selected: halign_str(self.horizontal_alignment).to_string(),
-                    options: ["Left", "Center", "Right", "Aligned", "Middle", "Fit"]
-                        .into_iter()
-                        .map(str::to_string)
-                        .collect(),
-                },
-            },
-            Property {
-                label: t!("V-Align").into_owned(),
-                field: "att_valign",
-                value: PropValue::Choice {
-                    selected: valign_str(self.vertical_alignment).to_string(),
-                    options: ["Baseline", "Bottom", "Middle", "Top"]
-                        .into_iter()
-                        .map(str::to_string)
-                        .collect(),
-                },
+            if self.is_multiline {
+                ro(t!("Justify").as_ref(), "att_justify", t!(justify_label(self)).into_owned())
+            } else {
+                row(
+                    t!("Justify").as_ref(),
+                    "att_justify",
+                    PropValue::Choice {
+                        selected: justify_label(self).to_string(),
+                        options: JUSTIFY_OPTIONS.into_iter().map(str::to_string).collect(),
+                    },
+                )
             },
             // Fixed by the style when the style fixes its height.
             crate::entities::common::num_prop(
@@ -482,125 +672,148 @@ impl PropertyEditable for AttributeDefinition {
             edit_angle(t!("Rotation").as_ref(), "att_rot", self.rotation.to_degrees()),
             edit(t!("Width factor").as_ref(), "att_wf", self.width_factor),
             edit_angle(t!("Obliquing").as_ref(), "att_ob", self.oblique_angle.to_degrees()),
-            edit(t!("Text alignment X").as_ref(), "att_ax", self.alignment_point.x),
-            edit(t!("Text alignment Y").as_ref(), "att_ay", self.alignment_point.y),
-            edit(t!("Text alignment Z").as_ref(), "att_az", self.alignment_point.z),
-            ro(
-                t!("Boundary width").as_ref(),
-                "att_field_len",
-                self.field_length.to_string(),
-            ),
-            ro(
-                t!("Upside down").as_ref(),
-                "att_upside_down",
-                bool_yn(self.text_generation_flags & 0x4 != 0),
-            ),
-            ro(
-                t!("Backward").as_ref(),
-                "att_backward",
-                bool_yn(self.text_generation_flags & 0x2 != 0),
-            ),
+            ro(t!("Direction").as_ref(), "att_direction", t!("By style").into_owned()),
+            if self.is_multiline {
+                edit(
+                    t!("Boundary width").as_ref(),
+                    "att_bwidth",
+                    self.embedded_mtext.as_ref().map_or(0.0, |m| m.rectangle_width),
+                )
+            } else {
+                ro(t!("Boundary width").as_ref(), "att_bwidth", String::new())
+            },
+            alignment(t!("Text alignment X"), "att_ax", self.alignment_point.x),
+            alignment(t!("Text alignment Y"), "att_ay", self.alignment_point.y),
+            alignment(t!("Text alignment Z"), "att_az", self.alignment_point.z),
         ];
-        // Constant attributes can't be edited at insert time — surface that
-        // by marking the Value field read-only.
-        if self.flags.constant {
-            if let Some(p) = text_props.iter_mut().find(|p| p.field == "att_default") {
-                p.value = PropValue::ReadOnly(self.default_value.clone());
-            }
-        }
         vec![
-            PropSection {
-                title: t!("Text").into_owned(),
-                props: text_props,
-            },
-            PropSection {
-                title: t!("Geometry").into_owned(),
-                props: vec![
-                    edit(t!("Position X").as_ref(), "att_ix", self.insertion_point.x),
-                    edit(t!("Position Y").as_ref(), "att_iy", self.insertion_point.y),
-                    edit(t!("Position Z").as_ref(), "att_iz", self.insertion_point.z),
-                ],
-            },
+            PropSection { title: t!("Text").into_owned(), props: text_props },
             PropSection {
                 title: t!("Misc").into_owned(),
                 props: vec![
-                    ro(t!("Invisible").as_ref(), "att_invisible", bool_yn(self.flags.invisible)),
-                    ro(t!("Constant").as_ref(), "att_constant", bool_yn(self.flags.constant)),
-                    ro(t!("Verify").as_ref(), "att_verify", bool_yn(self.flags.verify)),
-                    ro(t!("Preset").as_ref(), "att_preset", bool_yn(self.flags.preset)),
-                    ro(t!("Lock position").as_ref(), "att_lock_pos", bool_yn(self.lock_position)),
-                    Property {
-                        label: t!("Multiple lines").into_owned(),
-                        field: "att_mtext_flag",
-                        value: PropValue::Choice {
-                            selected: mtext_flag_str(self.mtext_flag).to_string(),
-                            options: ["SingleLine", "MultiLine", "ConstantMultiLine"]
-                                .into_iter()
-                                .map(str::to_string)
-                                .collect(),
-                        },
-                    },
+                    row(t!("Upside down").as_ref(), "att_upside_down", yes_no(self.text_generation_flags & 0x4 != 0)),
+                    row(t!("Backward").as_ref(), "att_backward", yes_no(self.text_generation_flags & 0x2 != 0)),
+                    row(t!("Invisible").as_ref(), "att_invisible", yes_no(self.flags.invisible)),
+                    row(t!("Constant").as_ref(), "att_constant", yes_no(self.flags.constant)),
+                    row(t!("Verify").as_ref(), "att_verify", yes_no(self.flags.verify)),
+                    row(t!("Preset").as_ref(), "att_preset", yes_no(self.flags.preset)),
+                    row(t!("Multiple lines").as_ref(), "att_multiline", yes_no(self.is_multiline)),
+                    row(
+                        t!("Lock position").as_ref(),
+                        "att_lock_pos",
+                        yes_no(self.lock_position || self.flags.locked_position),
+                    ),
                 ],
             },
         ]
     }
 
     fn apply_geom_prop(&mut self, field: &str, value: &str) {
-        // String / enum fields first.
-        if field == "att_tag" {
-            self.tag = value.to_string();
+        if validate_definition_property(field, value).is_err() {
             return;
         }
-        if field == "att_prompt" {
-            self.prompt = value.to_string();
-            return;
-        }
-        if field == "att_default" {
-            if !self.flags.constant {
-                self.default_value = value.to_string();
-            }
-            return;
-        }
-        if field == "att_style" {
-            self.text_style = value.to_string();
-            return;
-        }
-        if field == "att_halign" {
-            if let Some(a) = parse_halign(value) {
-                self.horizontal_alignment = a;
-            }
-            return;
-        }
-        if field == "att_valign" {
-            if let Some(a) = parse_valign(value) {
-                self.vertical_alignment = a;
-            }
-            return;
-        }
-        if field == "att_mtext_flag" {
-            self.mtext_flag = match value {
-                "MultiLine" => MTextFlag::MultiLine,
-                "ConstantMultiLine" => MTextFlag::ConstantMultiLine,
-                _ => MTextFlag::SingleLine,
-            };
-            return;
-        }
-        // Numeric scalars.
-        let Some(v) = parse_f64(value) else {
-            return;
-        };
         match field {
-            "att_ix" => self.insertion_point.x = v,
-            "att_iy" => self.insertion_point.y = v,
-            "att_iz" => self.insertion_point.z = v,
-            "att_ax" => self.alignment_point.x = v,
-            "att_ay" => self.alignment_point.y = v,
-            "att_az" => self.alignment_point.z = v,
-            "att_h" if v > 0.0 => self.height = v,
-            "att_rot" => self.rotation = v.to_radians(),
-            "att_wf" if v.abs() > 1e-9 => self.width_factor = v,
-            "att_ob" => self.oblique_angle = v.to_radians(),
-            _ => {}
+            "att_tag" => self.tag = value.trim().to_string(),
+            "att_prompt" if !self.flags.constant => self.prompt = value.to_string(),
+            "att_default" => {
+                self.default_value = value.to_string();
+                if let Some(m) = self.embedded_mtext.as_mut() {
+                    m.value = value.to_string();
+                }
+            }
+            "att_style" => {
+                self.text_style = value.to_string();
+                if let Some(m) = self.embedded_mtext.as_mut() {
+                    m.style = value.to_string();
+                }
+            }
+            "att_annotative" => self.flags.annotative = is_yes(value),
+            "att_invisible" => self.flags.invisible = is_yes(value),
+            "att_constant" => {
+                self.flags.constant = is_yes(value);
+                if self.flags.constant {
+                    self.prompt.clear();
+                }
+            }
+            "att_verify" => self.flags.verify = is_yes(value),
+            "att_preset" => self.flags.preset = is_yes(value),
+            "att_lock_pos" => {
+                self.lock_position = is_yes(value);
+                self.flags.locked_position = self.lock_position;
+            }
+            "att_upside_down" => {
+                self.text_generation_flags = set_bit(self.text_generation_flags, 0x4, is_yes(value))
+            }
+            "att_backward" => {
+                self.text_generation_flags = set_bit(self.text_generation_flags, 0x2, is_yes(value))
+            }
+            "att_multiline" => set_multiline(self, is_yes(value)),
+            "att_justify" => {
+                let Some((h, v)) = parse_justify(value) else {
+                    return;
+                };
+                let was_two_point = is_two_point(self);
+                self.horizontal_alignment = h;
+                self.vertical_alignment = v;
+                if is_plain_left(self) {
+                    return;
+                }
+                // The text stays where it is: the baseline start is kept and
+                // the alignment point moves to the new anchor.
+                if !is_two_point(self) {
+                    let (dx, dy) = justify_offset(self).map_or((0.0, 0.0), |o| rotate(self, o));
+                    let s = self.insertion_point;
+                    self.alignment_point = Vector3::new(s.x + dx, s.y + dy, s.z);
+                    return;
+                }
+                let span = (self.alignment_point.x - self.insertion_point.x)
+                    .hypot(self.alignment_point.y - self.insertion_point.y);
+                if !was_two_point || span < 1.0e-9 {
+                    // A baseline as long as the tag.
+                    let length = justify_offset(self).map_or(self.height, |(advance, _)| advance);
+                    let (sin, cos) = self.rotation.sin_cos();
+                    self.alignment_point = Vector3::new(
+                        self.insertion_point.x + cos * length,
+                        self.insertion_point.y + sin * length,
+                        self.insertion_point.z,
+                    );
+                }
+            }
+            _ => {
+                let Some(v) = parse_f64(value) else {
+                    return;
+                };
+                match field {
+                    "att_ax" => self.alignment_point.x = v,
+                    "att_ay" => self.alignment_point.y = v,
+                    "att_az" => self.alignment_point.z = v,
+                    "att_h" => {
+                        self.height = v;
+                        if let Some(m) = self.embedded_mtext.as_mut() {
+                            m.height = v;
+                        }
+                    }
+                    "att_rot" => {
+                        self.rotation = v.to_radians();
+                        if let Some(m) = self.embedded_mtext.as_mut() {
+                            m.rotation = self.rotation;
+                        }
+                    }
+                    "att_wf" => self.width_factor = v,
+                    "att_ob" => self.oblique_angle = v.to_radians(),
+                    "att_bwidth" if v >= 0.0 => {
+                        if let Some(m) = self.embedded_mtext.as_mut() {
+                            m.rectangle_width = v;
+                        }
+                    }
+                    _ => {}
+                }
+            }
+        }
+        // A one-point justified definition keeps its stored baseline start in
+        // step with the anchor, height, style and rotation.
+        if !is_plain_left(self) && !is_two_point(self) {
+            self.insertion_point = definition_text_start(self);
         }
     }
 }

src/entities/common.rs

@@ -68,6 +68,10 @@ thread_local! {
     /// the same place.
     static FIXED_TEXT_HEIGHTS: std::cell::RefCell<rustc_hash::FxHashMap<String, f64>> =
         std::cell::RefCell::new(rustc_hash::FxHashMap::default());
+    /// Resolved font of every text style, for text measured without the
+    /// document at hand (justification changes, attribute placement).
+    static STYLE_FONTS: std::cell::RefCell<rustc_hash::FxHashMap<String, String>> =
+        std::cell::RefCell::new(rustc_hash::FxHashMap::default());
 }
 
 /// Record which text styles fix their height, from the drawing's style table.
@@ -81,6 +85,23 @@ pub fn set_fixed_text_heights(document: &codec::CadDocument) {
             }
         }
     });
+    STYLE_FONTS.with(|cell| {
+        let mut map = cell.borrow_mut();
+        map.clear();
+        for style in document.text_styles.iter() {
+            let font = crate::entities::text_support::resolve_text_style(&style.name, document).font_name;
+            map.insert(style.name.to_ascii_lowercase(), font);
+        }
+    });
+}
+
+/// The resolved font of `style` (Standard when unnamed); empty when unknown.
+pub fn style_font(style: &str) -> String {
+    let key = match style.trim() {
+        "" => "standard".to_string(),
+        name => name.to_ascii_lowercase(),
+    };
+    STYLE_FONTS.with(|cell| cell.borrow().get(&key).cloned().unwrap_or_default())
 }
 
 /// The height `style` fixes, or `None` when it leaves the height to the entity.

src/locale_catalog.rs

@@ -197,6 +197,26 @@ pub(super) fn message_attribute(source: &str) -> Option<(&'static str, &'static
         "Block \"{name}\" has no reference in the drawing to edit." => Some(("insert", "bp-block-no-reference")),
         "Block \"{name}\" is referenced in the drawing and cannot be removed." => Some(("insert", "bp-block-referenced")),
         "Block \"{name}\" removed." => Some(("insert", "bp-block-removed")),
+        "Specify on-screen" => Some(("insert", "attdef-on-screen")),
+        "Insert field" => Some(("insert", "attdef-insert-field")),
+        "Text Settings" => Some(("insert", "attdef-text-settings")),
+        "Align below previous attribute definition" => Some(("insert", "attdef-align-below")),
+        "Define" => Some(("insert", "attdef-define")),
+        "Edit Attribute Definition" => Some(("insert", "attdef-edit-title")),
+        "Changes the tag, prompt and default value of an attribute definition." => Some(("insert", "attdef-edit-help")),
+        "Defines an attribute: a tag, prompt and default value placed as text in a block definition." => Some(("insert", "attdef-help")),
+        "Define Attributes" => Some(("insert", "attdef-define-attributes")),
+        "Manage Attributes" => Some(("insert", "attdef-manage-attributes")),
+        "Set Base Point" => Some(("insert", "attdef-set-base-point")),
+        "Retain Attribute Display" => Some(("insert", "attdef-attmode-retain")),
+        "Display All Attributes" => Some(("insert", "attdef-attmode-all")),
+        "Hide All Attributes" => Some(("insert", "attdef-attmode-none")),
+        "Edit Attribute" => Some(("insert", "attdef-edit-attribute")),
+        "Multiline editor" => Some(("insert", "attdef-multiline-editor")),
+        "The tag cannot be empty." => Some(("insert", "attdef-tag-empty")),
+        "The tag may not contain spaces." => Some(("insert", "attdef-tag-spaces")),
+        "Value must be positive and nonzero." => Some(("insert", "attdef-positive")),
+        "Requires valid numeric angle or second point." => Some(("insert", "attdef-angle")),
         "Stylization" => Some(("properties", "stylization")),
         "Color scheme" => Some(("properties", "color-scheme")),
         "Scan Colors" => Some(("properties", "scan-colors")),

src/modules/draw/mod.rs

@@ -31,7 +31,7 @@ impl CadModule for DrawModule {
         use crate::modules::annotate::{
             angular_dim, leader_cmd, linear_dim, mleader_cmd, mtext, radius_dim, text,
         };
-        use crate::modules::insert::{create_block, insert_block};
+        use crate::modules::insert::{attedit, create_block, edit_block, insert_block};
         use clipboard::{copy_clip, cut, paste};
         use draw::{arc, circle, ellipse, hatch, line, polyline, shapes};
         use groups::{group, ungroup};
@@ -200,9 +200,13 @@ impl CadModule for DrawModule {
                 },
                 RibbonGroup {
                     title: "Block",
+                    // Slide-out: Define / Manage / Synchronize Attributes and
+                    // Set Base Point.
                     tools: vec![
-                        RibbonItem::LargeTool(create_block::tool()),
                         insert_block::gallery(),
+                        RibbonItem::Tool(create_block::tool()),
+                        RibbonItem::Tool(edit_block::tool()),
+                        RibbonItem::Tool(attedit::tool()),
                     ],
                 },
                 RibbonGroup {

src/modules/insert/attsync.rs

@@ -1,10 +0,0 @@
-use crate::modules::{IconKind, ModuleEvent, ToolDef};
-pub const ICON: IconKind = IconKind::Svg(include_bytes!("../../../assets/icons/attsync.svg"));
-pub fn tool() -> ToolDef {
-    ToolDef {
-        id: "ATTSYNC",
-        label: "Synchronize",
-        icon: ICON,
-        event: ModuleEvent::Command("ATTSYNC".to_string()),
-    }
-}

src/modules/insert/base_point.rs

@@ -1,19 +1,8 @@
 use crate::t;
 
 use crate::command::{CadCommand, CmdResult};
-use crate::modules::{IconKind, ModuleEvent, ToolDef};
 use glam::DVec3;
 
-pub const ICON: IconKind = IconKind::Svg(include_bytes!("../../../assets/icons/base_point.svg"));
-pub fn tool() -> ToolDef {
-    ToolDef {
-        id: "BASE",
-        label: "Set Base\nPoint",
-        icon: ICON,
-        event: ModuleEvent::Command("BASE".to_string()),
-    }
-}
-
 // ── Command implementation ────────────────────────────────────────────────
 
 /// Picks one point and delegates to the inline `BASE <x> <y> <z>` handler,

src/modules/insert/mod.rs

@@ -1,14 +1,13 @@
 // Insert module — references, point clouds, blocks, attributes, import, content.
 
 mod attdef;
-mod attedit;
+pub(crate) mod attedit;
 mod attman;
-mod attsync;
 pub mod base_point;
 mod content_browser;
 pub(crate) mod create_block;
 mod design_center;
-mod edit_block;
+pub(crate) mod edit_block;
 pub(crate) mod image_transparency;
 pub(crate) mod insert_block;
 mod landxml;
@@ -106,19 +105,38 @@ impl CadModule for InsertModule {
                     tools: vec![
                         RibbonItem::LargeTool(mview_block::tool()),
                         insert_block::gallery(),
-                        RibbonItem::Tool(create_block::tool()),
-                        RibbonItem::Tool(edit_block::tool()),
-                        RibbonItem::Tool(base_point::tool()),
+                        RibbonItem::LabeledDropdown {
+                            id: "ATTEDIT_DROPDOWN",
+                            label: "Edit Attribute",
+                            icon: attedit::ICON,
+                            items: vec![
+                                ("ATTEDIT", "Single", attedit::ICON),
+                                ("-ATTEDIT", "Multiple", attedit::ICON),
+                            ],
+                            default: "ATTEDIT",
+                        },
+                        // ATTMODE: the face shows the drawing's current setting.
+                        RibbonItem::LabeledDropdown {
+                            id: "ATTMODE_DROPDOWN",
+                            label: "",
+                            icon: attedit::ICON,
+                            items: vec![
+                                ("ATTMODE1", "Retain Attribute Display", attedit::ICON),
+                                ("ATTMODE2", "Display All Attributes", attedit::ICON),
+                                ("ATTMODE0", "Hide All Attributes", attedit::ICON),
+                            ],
+                            default: "ATTMODE1",
+                        },
                     ],
                 },
-                // ── Attributes ────────────────────────────────────────────────────
+                // ── Block Definition (slide-out: Set Base Point, Synchronize) ─────
                 RibbonGroup {
-                    title: "Attributes",
+                    title: "Block Definition",
                     tools: vec![
+                        RibbonItem::LargeTool(create_block::tool()),
                         RibbonItem::LargeTool(attdef::tool()),
-                        RibbonItem::LargeTool(attedit::tool()),
-                        RibbonItem::Tool(attman::tool()),
-                        RibbonItem::Tool(attsync::tool()),
+                        RibbonItem::LargeTool(attman::tool()),
+                        RibbonItem::LargeTool(edit_block::tool()),
                     ],
                 },
                 // ── Import ────────────────────────────────────────────────────────

src/scene/cache/block_cache.rs

@@ -618,6 +618,18 @@ fn build_defn(
                 continue
             }
             _ => {
+                // A standalone definition draws its tag; as block content a
+                // constant one draws its value.
+                let shown;
+                let entity = match entity {
+                    EntityType::AttributeDefinition(ad) => {
+                        let mut value = ad.clone();
+                        value.tag = ad.default_value.clone();
+                        shown = EntityType::AttributeDefinition(value);
+                        &shown
+                    }
+                    other => other,
+                };
                 // A wide polyline inside a block carries its `world_width` on
                 // the LocalWire; `emit_wire` scales it by the insert transform
                 // so the shader band matches the scaled geometry (same band the

src/ui/ribbon/draw_panel.rs

@@ -106,6 +106,9 @@ const TOOLS: &[Tool] = &[
 #[derive(Clone, Copy)]
 struct Panel {
     id: &'static str,
+    /// A command the owning ribbon group must hold, for titles more than one
+    /// tab uses ("Block" on Home and Insert).
+    anchor: Option<&'static str>,
     title_id: &'static str,
     title: &'static str,
     tools: &'static [Tool],
@@ -121,25 +124,60 @@ const REFERENCE_TOOLS: &[Tool] = &[Tool {
 }];
 pub(super) const REFERENCE_PANEL_ID: &str = "reference_extension";
 
+const fn icon_tool(command: &'static str, label: &'static str, icon: &'static [u8]) -> Tool {
+    Tool { command, label, icon, options: &[] }
+}
+
+/// Home > Block slide-out.
+const HOME_BLOCK_TOOLS: &[Tool] = &[
+    icon_tool("ATTDEF", "Define Attributes", include_bytes!("../../../assets/icons/attdef.svg")),
+    icon_tool("ATTMAN", "Manage Attributes", include_bytes!("../../../assets/icons/attman.svg")),
+    icon_tool("ATTSYNC", "Synchronize", include_bytes!("../../../assets/icons/attsync.svg")),
+    icon_tool("BASE", "Set Base Point", include_bytes!("../../../assets/icons/base_point.svg")),
+];
+
+/// Insert > Block Definition slide-out.
+const BLOCK_DEFINITION_TOOLS: &[Tool] = &[
+    icon_tool("BASE", "Set Base Point", include_bytes!("../../../assets/icons/base_point.svg")),
+    icon_tool("ATTSYNC", "Synchronize", include_bytes!("../../../assets/icons/attsync.svg")),
+];
+
 const PANELS: &[Panel] = &[
     Panel {
         id: PANEL_ID,
+        anchor: None,
         title_id: TITLE_ID,
         title: "Draw",
         tools: TOOLS,
     },
     Panel {
         id: "modify_extension",
+        anchor: None,
         title_id: "modify_extension_title",
         title: "Modify",
         tools: super::modify_panel::TOOLS,
     },
     Panel {
         id: REFERENCE_PANEL_ID,
+        anchor: None,
         title_id: "reference_extension_title",
         title: "Reference",
         tools: REFERENCE_TOOLS,
     },
+    Panel {
+        id: "home_block_extension",
+        anchor: Some("BEDIT"),
+        title_id: "home_block_extension_title",
+        title: "Block",
+        tools: HOME_BLOCK_TOOLS,
+    },
+    Panel {
+        id: "block_definition_extension",
+        anchor: None,
+        title_id: "block_definition_extension_title",
+        title: "Block Definition",
+        tools: BLOCK_DEFINITION_TOOLS,
+    },
 ];
 
 /// Command, label and icon of every tool in the expanded Draw and Modify
@@ -169,10 +207,16 @@ pub(super) fn parent_panel(id: &str) -> Option<&'static str> {
     panel_for_dropdown(id).map(|panel| panel.id)
 }
 
-pub(super) fn group_title<'a>(title: &'static str, open: &Option<String>) -> Element<'a, Message> {
-    let Some(panel) = PANELS
-        .iter()
-        .find(|panel| panel.title == title && !panel.tools.is_empty())
+pub(super) fn group_title<'a>(
+    title: &'static str,
+    group_ids: &[&'static str],
+    open: &Option<String>,
+) -> Element<'a, Message> {
+    let Some(panel) = PANELS.iter().copied().find(|panel| {
+        panel.title == title
+            && !panel.tools.is_empty()
+            && panel.anchor.is_none_or(|anchor| group_ids.contains(&anchor))
+    })
     else {
         return container(text(t!(title)).size(9).style(muted_text_style))
             .padding([1, 4])

src/ui/ribbon/mod.rs

@@ -1410,7 +1410,11 @@ fn render_group<'a>(
 
     column![
         tools_el,
-        draw_panel::group_title(group.title, open_dd),
+        draw_panel::group_title(
+            group.title,
+            &group.tools.iter().filter_map(item_id).collect::<Vec<_>>(),
+            open_dd,
+        ),
     ]
     .align_x(iced::Center)
     .spacing(0)

src/ui/window/attdef_dialog.rs

@@ -0,0 +1,403 @@
+//! Attribute Definition (ATTDEF) and Edit Attribute Definition dialogs:
+//! cards with accent headings, a help button on the left and the named
+//! action on the right, like the other drawing dialogs.
+
+use iced::widget::{button, checkbox, column, container, pick_list, row, text, text_input, Space};
+use iced::{Element, Fill, Length};
+
+use crate::app::Message;
+use crate::modules::draw::draw::attdef::{
+    Justify, AFLAG_CONSTANT, AFLAG_INVISIBLE, AFLAG_LOCK, AFLAG_MULTILINE, AFLAG_PRESET,
+    AFLAG_VERIFY,
+};
+use crate::t;
+use crate::ui::style::common::muted_style;
+use crate::ui::style::form::{button_style, dialog_button, field_style};
+use crate::ui::window::pdf_dialogs::{accent_text, card_style};
+
+/// One edit in either attribute definition dialog.
+#[derive(Debug, Clone)]
+pub enum AttdefDialogMsg {
+    Mode(u8, bool),
+    Annotative(bool),
+    Tag(String),
+    Prompt(String),
+    Default(String),
+    Justify(JustifyChoice),
+    Style(String),
+    Height(String),
+    Rotation(String),
+    Width(String),
+    OnScreen(bool),
+    Coord(usize, String),
+    AlignBelow(bool),
+    PickHeight,
+    PickRotation,
+    PickWidth,
+    /// Edit the default value in the multi-line text editor.
+    EditValue,
+    DismissError,
+    Ok,
+    Help,
+    EditTag(String),
+    EditPrompt(String),
+    EditDefault(String),
+    EditOk,
+}
+
+/// A justification as the dialog list shows it (translated label).
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct JustifyChoice(pub Justify);
+
+impl std::fmt::Display for JustifyChoice {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str(&t!(self.0.label()))
+    }
+}
+
+/// The ATTDEF dialog's fields.
+#[derive(Debug, Clone)]
+pub struct AttdefDialogState {
+    pub aflags: u8,
+    pub annotative: bool,
+    pub tag: String,
+    pub prompt: String,
+    pub default: String,
+    pub justify: Justify,
+    pub style: String,
+    pub styles: Vec<String>,
+    pub height: String,
+    pub rotation: String,
+    pub width: String,
+    pub on_screen: bool,
+    pub coords: [String; 3],
+    pub align_below: bool,
+    /// A definition was placed before in this session.
+    pub can_align_below: bool,
+    /// Validation message shown above the buttons.
+    pub error: Option<String>,
+}
+
+/// The Edit Attribute Definition dialog's fields.
+#[derive(Debug, Clone)]
+pub struct AttdefEditState {
+    pub handle: codec::Handle,
+    pub tag: String,
+    pub prompt: String,
+    pub default: String,
+    pub constant: bool,
+    pub error: Option<String>,
+}
+
+fn msg(m: AttdefDialogMsg) -> Message {
+    Message::AttdefDialog(m)
+}
+
+fn card<'a>(title: String, content: impl Into<Element<'a, Message>>) -> Element<'a, Message> {
+    container(column![text(title.to_uppercase()).size(10).style(accent_text), content.into()].spacing(8))
+        .padding([10, 12])
+        .width(Fill)
+        .style(card_style)
+        .into()
+}
+
+fn labelled<'a>(label: String, field: Element<'a, Message>, enabled: bool) -> Element<'a, Message> {
+    let label = text(label).size(12).width(Length::Fixed(118.0));
+    let label = if enabled { label } else { label.style(muted_style) };
+    row![label, field].spacing(8).align_y(iced::Center).into()
+}
+
+fn input<'a>(value: &str, enabled: bool, on: fn(String) -> AttdefDialogMsg) -> Element<'a, Message> {
+    let mut field = text_input("", value).size(12).padding([5, 8]).width(Fill).style(field_style);
+    if enabled {
+        field = field.on_input(move |v| msg(on(v)));
+    }
+    field.into()
+}
+
+/// The small button beside a field that takes the value from the drawing.
+fn pick<'a>(glyph: &'static str, tip: String, message: Option<AttdefDialogMsg>) -> Element<'a, Message> {
+    let b = button(text(glyph).size(13).align_x(iced::Center).width(Fill))
+        .style(button_style(false))
+        .padding([4, 0])
+        .width(Length::Fixed(28.0));
+    let b = match message {
+        Some(m) => b.on_press(msg(m)),
+        None => b,
+    };
+    iced::widget::tooltip(b, text(tip).size(11), iced::widget::tooltip::Position::Bottom).into()
+}
+
+fn mode<'a>(label: String, on: bool, bit: u8) -> Element<'a, Message> {
+    checkbox(on)
+        .label(label)
+        .text_size(12)
+        .size(14)
+        .on_toggle(move |v| msg(AttdefDialogMsg::Mode(bit, v)))
+        .into()
+}
+
+/// The validation message band, as in the Write Block dialog.
+fn error_band<'a>(error: &Option<String>) -> Option<Element<'a, Message>> {
+    let error = error.clone()?;
+    Some(
+        container(
+            row![
+                crate::ui::icons::semantic(ICON_WARN, 14.0),
+                text(error).size(11),
+                Space::new().width(Fill),
+                button(text("×").size(12))
+                    .on_press(msg(AttdefDialogMsg::DismissError))
+                    .style(button_style(false))
+                    .padding([1, 6]),
+            ]
+            .spacing(8)
+            .align_y(iced::Center),
+        )
+        .padding([6, 10])
+        .width(Fill)
+        .style(|theme: &iced::Theme| container::Style {
+            background: Some(iced::Background::Color(theme.palette().danger.base.color.scale_alpha(0.18))),
+            border: iced::Border { radius: 4.0.into(), ..Default::default() },
+            ..Default::default()
+        })
+        .into(),
+    )
+}
+
+static ICON_WARN: &[u8] = include_bytes!("../../../assets/icons/ui/warning_triangle.svg");
+
+fn footer<'a>(action: std::borrow::Cow<'static, str>, ok: AttdefDialogMsg) -> Element<'a, Message> {
+    row![
+        button(text("?").size(12))
+            .on_press(msg(AttdefDialogMsg::Help))
+            .style(button_style(false))
+            .padding([5, 11]),
+        Space::new().width(Fill),
+        dialog_button(t!("Cancel"), Message::CloseModal, false),
+        dialog_button(action, msg(ok), true),
+    ]
+    .spacing(6)
+    .align_y(iced::Center)
+    .into()
+}
+
+pub fn view<'a>(state: &'a AttdefDialogState, sizing: crate::ui::modal::ModalSizing) -> Element<'a, Message> {
+    let f = state.aflags;
+    let constant = f & AFLAG_CONSTANT != 0;
+    let multiline = f & AFLAG_MULTILINE != 0;
+    let modes = card(
+        t!("Mode").into_owned(),
+        column![
+            mode(t!("Invisible").into_owned(), f & AFLAG_INVISIBLE != 0, AFLAG_INVISIBLE),
+            mode(t!("Constant").into_owned(), constant, AFLAG_CONSTANT),
+            mode(t!("Verify").into_owned(), f & AFLAG_VERIFY != 0, AFLAG_VERIFY),
+            mode(t!("Preset").into_owned(), f & AFLAG_PRESET != 0, AFLAG_PRESET),
+            mode(t!("Lock position").into_owned(), f & AFLAG_LOCK != 0, AFLAG_LOCK),
+            mode(t!("Multiple lines").into_owned(), multiline, AFLAG_MULTILINE),
+        ]
+        .spacing(7),
+    );
+    let coords_on = !state.on_screen && !state.align_below;
+    let coord = |i: usize, axis: &'static str| -> Element<'a, Message> {
+        let mut field = text_input("", &state.coords[i]).size(12).padding([5, 8]).width(Fill).style(field_style);
+        if coords_on {
+            field = field.on_input(move |v| msg(AttdefDialogMsg::Coord(i, v)));
+        }
+        let label = text(axis).size(12).width(Length::Fixed(14.0));
+        let label = if coords_on { label } else { label.style(muted_style) };
+        row![label, field].spacing(8).align_y(iced::Center).into()
+    };
+    let mut on_screen = checkbox(state.on_screen)
+        .label(t!("Specify on-screen").into_owned())
+        .text_size(12)
+        .size(14);
+    if !state.align_below {
+        on_screen = on_screen.on_toggle(|v| msg(AttdefDialogMsg::OnScreen(v)));
+    }
+    let insertion = card(
+        t!("Insertion Point").into_owned(),
+        column![on_screen, coord(0, "X"), coord(1, "Y"), coord(2, "Z")].spacing(7),
+    );
+    let attribute = card(
+        t!("Attribute").into_owned(),
+        column![
+            labelled(t!("Tag").into_owned(), input(&state.tag, true, AttdefDialogMsg::Tag), true),
+            labelled(
+                t!("Prompt").into_owned(),
+                input(&state.prompt, !constant, AttdefDialogMsg::Prompt),
+                !constant
+            ),
+            labelled(
+                if constant { t!("Value") } else { t!("Default") }.into_owned(),
+                {
+                    let mut value = row![input(&state.default, true, AttdefDialogMsg::Default)].spacing(6);
+                    if multiline {
+                        value = value.push(pick(
+                            "…",
+                            t!("Multiline editor").into_owned(),
+                            Some(AttdefDialogMsg::EditValue),
+                        ));
+                    }
+                    // No field picker in this application yet.
+                    value.push(pick("ƒ", t!("Insert field").into_owned(), None))
+                }
+                .spacing(6)
+                .into(),
+                true
+            ),
+        ]
+        .spacing(8),
+    );
+    let text_on = !state.align_below;
+    let justify: Element<'a, Message> = if text_on && !multiline {
+        pick_list(
+            Some(JustifyChoice(state.justify)),
+            Justify::ALL.map(JustifyChoice).to_vec(),
+            |c: &JustifyChoice| c.to_string(),
+        )
+        .on_select(|c| msg(AttdefDialogMsg::Justify(c)))
+        .text_size(12)
+        .padding([5, 8])
+        .width(Fill)
+        .into()
+    } else {
+        container(text(JustifyChoice(state.justify).to_string()).size(12).style(muted_style))
+            .padding([5, 8])
+            .width(Fill)
+            .into()
+    };
+    let style: Element<'a, Message> = if text_on {
+        pick_list(Some(state.style.clone()), state.styles.clone(), |s: &String| s.clone())
+            .on_select(|s| msg(AttdefDialogMsg::Style(s)))
+            .text_size(12)
+            .padding([5, 8])
+            .width(Fill)
+            .into()
+    } else {
+        container(text(state.style.clone()).size(12).style(muted_style)).padding([5, 8]).width(Fill).into()
+    };
+    let mut annotative = checkbox(state.annotative).label(t!("Annotative").into_owned()).text_size(12).size(14);
+    if text_on {
+        annotative = annotative.on_toggle(|v| msg(AttdefDialogMsg::Annotative(v)));
+    }
+    let size_on = text_on && state.justify != Justify::Align;
+    let rot_on = text_on && !state.justify.two_point();
+    let settings = card(
+        t!("Text Settings").into_owned(),
+        column![
+            labelled(t!("Justification").into_owned(), justify, text_on && !multiline),
+            labelled(t!("Text style").into_owned(), style, text_on),
+            row![Space::new().width(Length::Fixed(126.0)), annotative],
+            labelled(
+                t!("Text height").into_owned(),
+                row![
+                    input(&state.height, size_on, AttdefDialogMsg::Height),
+                    pick("⌖", t!("Specify on-screen").into_owned(), size_on.then_some(AttdefDialogMsg::PickHeight)),
+                ]
+                .spacing(6)
+                .into(),
+                size_on
+            ),
+            labelled(
+                t!("Rotation").into_owned(),
+                row![
+                    input(&state.rotation, rot_on, AttdefDialogMsg::Rotation),
+                    pick("⌖", t!("Specify on-screen").into_owned(), rot_on.then_some(AttdefDialogMsg::PickRotation)),
+                ]
+                .spacing(6)
+                .into(),
+                rot_on
+            ),
+            labelled(
+                t!("Boundary width").into_owned(),
+                row![
+                    input(&state.width, text_on && multiline, AttdefDialogMsg::Width),
+                    pick(
+                        "⌖",
+                        t!("Specify on-screen").into_owned(),
+                        (text_on && multiline).then_some(AttdefDialogMsg::PickWidth)
+                    ),
+                ]
+                .spacing(6)
+                .into(),
+                text_on && multiline
+            ),
+        ]
+        .spacing(8),
+    );
+    let mut align = checkbox(state.align_below)
+        .label(t!("Align below previous attribute definition").into_owned())
+        .text_size(12)
+        .size(14);
+    if state.can_align_below {
+        align = align.on_toggle(|v| msg(AttdefDialogMsg::AlignBelow(v)));
+    }
+    let body = row![
+        column![modes, insertion].spacing(10).width(Length::Fixed(200.0)),
+        column![attribute, settings].spacing(10).width(Fill),
+    ]
+    .spacing(10);
+    let mut content = column![body, align];
+    if let Some(band) = error_band(&state.error) {
+        content = content.push(band);
+    }
+    content
+        .push(footer(t!("Define"), AttdefDialogMsg::Ok))
+        .spacing(10)
+        .padding([10, 12])
+        .width(sizing.width)
+        .into()
+}
+
+pub fn view_edit<'a>(state: &'a AttdefEditState, sizing: crate::ui::modal::ModalSizing) -> Element<'a, Message> {
+    let field = |label: String, value: &'a str, enabled: bool, on: fn(String) -> AttdefDialogMsg| {
+        let mut input = text_input("", value).size(12).padding([5, 8]).width(Fill).style(field_style);
+        if enabled {
+            input = input.on_input(move |v| msg(on(v)));
+        }
+        let label = text(label).size(12).width(Length::Fixed(80.0));
+        let label = if enabled { label } else { label.style(muted_style) };
+        row![label, input].spacing(8).align_y(iced::Center)
+    };
+    let content = card(
+        t!("Attribute Definition").into_owned(),
+        column![
+            field(t!("Tag").into_owned(), &state.tag, true, AttdefDialogMsg::EditTag),
+            field(t!("Prompt").into_owned(), &state.prompt, !state.constant, AttdefDialogMsg::EditPrompt),
+            row![
+                field(
+                    if state.constant { t!("Value") } else { t!("Default") }.into_owned(),
+                    &state.default,
+                    true,
+                    AttdefDialogMsg::EditDefault
+                ),
+                pick("ƒ", t!("Insert field").into_owned(), None),
+            ]
+            .spacing(6)
+            .align_y(iced::Center),
+        ]
+        .spacing(8),
+    );
+    let mut content = column![content];
+    if let Some(band) = error_band(&state.error) {
+        content = content.push(band);
+    }
+    content
+        .push(footer(t!("Apply"), AttdefDialogMsg::EditOk))
+        .spacing(10)
+        .padding([10, 12])
+        .width(sizing.width)
+        .into()
+}
+
+/// The tag messages the reference shows for the dialogs.
+pub fn tag_error(tag: &str) -> Option<&'static str> {
+    if tag.trim().is_empty() {
+        Some("The tag cannot be empty.")
+    } else if tag.trim().contains(char::is_whitespace) {
+        Some("The tag may not contain spaces.")
+    } else {
+        None
+    }
+}

src/ui/window/mod.rs

@@ -1,4 +1,5 @@
 pub mod about;
+pub mod attdef_dialog;
 pub mod block_definition;
 pub mod block_palette;
 pub mod browser;