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A comment on SumatraPDF Reader. Parent comment

Re:SumatraPDF Reader by izacus on Tuesday October 24, 2023 @06:24AM (#37996998)
Having done that, PDF spec is in many ways much saner and better designed than plenty of "APIs" modern JS jockeys create.

The original spec is a bit ugly because they were saving bytes in the format (using things like single letters for dictionary keys), but some things are actually quite well thought out (Appearance Streams are great for forward and backward compatibility and are probably no. 1 reason why nothing managed to replace PDF.)

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Re:SumatraPDF Reader by wolverine876 on Tuesday October 24, 2023 @11:50AM (#38000888)
> Appearance Streams are great for forward and backward compatibility and are probably no. 1 reason why nothing managed to replace PDF.

I've been wondering why they took that approach. Do you know their original reasoning? And how does it help compatibility?

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