Block Definition command-line forms, block record data and dialog defaults

-BLOCK, -WBLOCK, -BEDIT, ATTSYNC, BASE and INSBASE follow the reference
prompts and messages; empty blocks; WBLOCK keeps object coordinates and
stores INSBASE; annotative and hyperlink data on the block record; block
preview images; remembered dialog choices; block aliases.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

assets/ocad.pgp

@@ -13,6 +13,7 @@ PL,       *PLINE
 A,        *ARC
 C,        *CIRCLE
 B,        *BLOCK
+-B,       *-BLOCK
 I,        *INSERT
 DO,       *DONUT
 EL,       *ELLIPSE
@@ -58,6 +59,8 @@ AR,       *ARRAY
 MA,       *MATCHPROP
 VV,       *QLAYER
 ATE,      *ATTEDIT
+-ATE,     *-ATTEDIT
+ATTE,     *-ATTEDIT
 
 ; ── Clipboard ─────────────────────────────────────────────────────────────
 CC,       *COPYCLIP
@@ -68,6 +71,9 @@ PC,       *PASTECLIP
 ATT,      *ATTDEF
 -ATT,     *-ATTDEF
 BE,       *BEDIT
+BC,       *BCLOSE
+BS,       *BSAVE
+BVS,      *BVSTATE
 IAT,      *IMAGEATTACH
 XA,       *XATTACH
 XR,       *XREF
@@ -77,6 +83,7 @@ ICL,      *IMAGECLIP
 IAD,      *IMAGEADJUST
 ADC,      *ADCENTER
 W,        *WBLOCK
+-W,       *-WBLOCK
 
 ; ── Layers / groups ───────────────────────────────────────────────────────
 LA,       *LAYERS