Hello_World_PDFA-2b.pdf
If the FontDescriptor dictionary of an embedded CID font contains a CIDSet stream, then it shall identify all CIDs which are present in the font program, regardless of whether a CID in the font is referenced or used by the PDF or not. PDCIDFont fontFile_size == 0 || fontName.search(/[A-Z]{6}\+/) != 0 || CIDSet_size == 0 || cidSetListsAllGlyphs == true root/document[0]/pages[0](5 0 obj PDPage)/contentStream[0](7 0 obj PDContentStream)/operators[3]/font[0](AAAYFD+LibreFranklin-Regular)/DescendantFonts[0](AAAYFD+LibreFranklin-Regular) A CID Font subset does not define CIDSet entry in its Descriptor dictionary
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