The pdf crate's PrintSettings gains advanced {printAsBitmap,
overprints: preserve|discard|simulate, flattenerPreset} and
color.profile, all defaulting so saved print_setup values still load.
Composite output discards overprints (no /OP) or simulates them as
Overprint Preview draws them; separations keep them. A printer profile
converts composite colours with the chosen intent (a CMYK one writes
device CMYK) and separations separate with a CMYK one. The engine
flattens transparency with the preset, or renders each printed region
as one image for Print as Bitmap, before PDF or PostScript layout.
The Print dialog's Advanced and Color Management sections show them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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