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* PDF: fields and note numbers put their shown text in the text layer A field, a note reference or an equation is shaped as one cluster that stands for the object's placeholder character (U+FFFC) in the paragraph text. The display list took a glyph run's text from the paragraph, so a footer's "Page 1 of 5" went into the PDF's text layer as "Page  of ": copying, search and screen readers got the placeholder. 76 of the 365 PDFs written from docxide-pdf's Word reference corpus had it; Word's have none. ParaLayout::shown keeps, by cluster index, the text such a cluster draws (filled by Builder::shape_atomic), and the display list takes that text for those clusters. The drawing doesn't change. Now none of the 365 PDFs carries the placeholder; mean line-break agreement with Word 62.9% -> 63.4% (the scorer reads the text layer). Test: a footer's PAGE and NUMPAGES fields read "Page 1 of 2" and "Page 2 of 2" in the exported PDF's text (was "Page  of "). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Tests: a REF field's result is extractable PDF text (from #112 by @LloydNicholson) Co-Authored-By: LloydNicholson <LloydNicholson@users.noreply.github.com> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Oliver Zieschang <4963183+naxvog@users.noreply.github.com> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Brandon Thomas <echelon@gmail.com>