When trapnet annotations are found in the document,
PDF/X-1a:2001
requires that:
- The trapped flag in the document is set to either True or False (Unknown is not allowed).
- If the trapped flag is False, the document does not contain trapnet annotations.
- If the trapped flag is True, the document is completely trapped, and the document contains trapnet annotations.
- Font substitution is not used.
- The CMYK color space is used.
When trapnet annotations are found in the document,
PDF/X-3:2002
requires that:
- Trapping occurs only when all the fonts in the document are embedded.
- The CMYK color space is used.