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* M5: Import comments takes another PDF and copies its comments onto the same pages Import comments read only XFDF, FDF, XML, XDP, CSV and text data files. It now also takes a PDF: each comment of that PDF is copied onto the page with the same number, at the same place, with its appearance stream, its pop-up, its replies and its layer. Comments on pages past the document's last page are left out, together with replies to them. Links, form fields and redaction marks are not copied. A comment named like one already on its page replaces it, as an XFDF or FDF import does. A PDF without comments is refused with "nothing in the file matches this document", and a PDF that needs a password is refused. - organize: import_comments copies the comments with the page copier that Insert Pages uses, and registers the layers they use. - engine: Edit::ImportData reads a file that starts with %PDF- as a PDF. Any other file goes to the data importer first, and is read as a PDF when that fails, %PDF- occurs in its first 1,024 bytes and the PDF reader opens it. - ui: Comments > Import comments lists .pdf files; form.import_data lists the same files as before. - automation: the doc_import_data description names the PDF case. - parity: comment.import-from-pdf is shipped. * Import comments: an annotation that is no comment keeps its name A comment imported from a PDF replaced any annotation of the same /NM on its page that was not locked, a redaction mark or a widget, so a link, screen or 3D annotation of that name was overwritten. Only an annotation whose subtype is one of the copied comment subtypes is replaced now; for any other, the copy is added beside it without the name. The subtype is read through an indirect reference. * Import comments: index each page's annotations instead of scanning them per comment * Import comments: a layer that BaseState OFF hides stays hidden * Import comments: a PDF with binary bytes before its header imports on an XFA form, and two comments with one name both land On an XFA form, a decode failure no longer stops the import when a PDF header is in the first 1,024 bytes; the PDF's comments are copied. Two incoming comments on one page with the same /NM no longer replace the same comment: the first replaces it, and the second is added without the name. * Import comments: an inline annotation on the page is replaced by name An annotation written inline in a page's /Annots is made an indirect object before names are matched, so an incoming comment with its /NM replaces it instead of being added beside it. * Import comments: two new comments with one name keep it once When no comment on the page has the name, the first incoming comment keeps its /NM and each later one with the same name is added without it.