forked from 1b-agent/opencadstudio-upstream
Attach External Reference dialog after XATTACH / ATTACH; ATTACH routes drawings, PDFs and images; placement prompts and messages follow the reference (presets, Corner/XYZ, nonzero check, existing definition reuse, missing file, self-reference); name keeps the file's case; overlay and path type at attach; one undo step for definition and INSERT; -XREF option prompt and `?` table; XREF opens the palette; ER alias; xref Properties rows; dependent symbols flagged and remapped and resolved content left out of the saved file; dialog_ok automation action; localized labels. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>