same "CID" and the same font name ("AAAROV+ArialUnicodeMS" -- no more
"AAA???+ArialUnicodeMS" coming up multiple times with slightly
different names).
Some more explanation:
The "AAAROV+" or similar (always with "+") indicates that it is a font
subset. But if you use it several times, it is likely to contain the
same glyphs. That is why reusing it helps. The subsetting is done at
saving time, i.e. PDFBox then "knows" what glyphs you used and then
creates a new, smaller font.
The built-in type 1 "standard 14" fonts are without the actual font,
because one assumes that the viewer has them in the OS. So they don't
use much space.
Reusing resources in a document is also good with images, e.g. a logo
that appears on each page.
Tilman
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