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Well, they are embedded in the PDF as a Type 1 font. That support can in principle be removed (e.g., if your font rendering depends on a library shared with oth
by gpvos 4y ago
Well, they are embedded in the PDF as a Type 1 font. That support can in principle be removed (e.g., if your font rendering depends on a library shared with other software that drops Type 1 support), although indeed that would not be in the spirit of PDF (and go against what is now an ISO standard).
Reasons for text selection going across columns can be very varied, although indeed documents with metadata will also otherwise usually be structured enough to have proper text order.
- wolrah 4y ago> Well, they are embedded in the PDF as a Type 1 font. That support can in principle be removed (e.g., if your font rendering depends on a library shared with other software that drops Type 1 support), although indeed that would not be in the spirit of PDF (and go against what is now an ISO standard). Type 1 fonts are a subset of Postscript sufficient to describe glyph outlines, plus hinting and font specific metadata. PDFs are a larger subset of Postscript that keeps more features but still strips it down from a programming language to a document description language while adding a stricter structure, embedding of files, and other features relevant to its use as digital paper. The Venn diagram of PostScript, PDF, and Type 1 fonts has a LOT of overlap. Any useful Postscript or PDF viewer inherently has to support everything about Type 1 fonts other than hinting, and hinting only matters at sizes where subpixels matter.