OFFSET's Erase and Layer keywords open their Yes/No and Current/Source
prompts (remembered in OFFSETERASE/OFFSETLAYER and shown in the current
settings line); Multiple keeps offsetting the newest copy until Enter and
Undo takes back the last offset. The JSON form takes `erase` and `layer`.
MOVE and COPY ask for a displacement after the Displacement keyword or
Enter at the base point prompt.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
