- The page transform is read as 16.16 fixed point held in single precision
and each user-space coordinate as a single-precision value kept to six
decimals, so imported coordinates match the reference to the last digit.
- Paths wholly outside the page (crop box) or the current clip are left out.
- The page's /UserUnit scales the import.
- Unreadable files (no trailer, empty, not a PDF) print the "This file
cannot be opened." block; encrypted files are asked for again silently.
- Page prompt: digits only, "There is no N in <file>." past the last page;
page list prompt keeps asking with "Please enter page number or *.".
- Automation: pdf_import_pick (the path the next PDF picker returns) and
pdf_import_dialog (page / on_screen / scale / rotation / ok / cancel).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>