Annex Q. (normative) Method for determining transparency on a page
Q.2. Page content
Change the last paragraph as follows:
Since Annotations require an appearance stream which is drawn by a PDF processor on top of the page content, it is possible that their presence may cause a page without any transparency to acquire some transparency. Therefore, all annotations object's in the page dictionary's Annots array shall have their appearance streams processed as a form XObject, according to Q.3, "Form XObjects".
Last modified: 9 May 2022