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level-3.adoc lists three Level 2 operators as new in Level 3 #10
Description
docs/levels/level-3.adoc ("New Operators") lists these as additions in LanguageLevel 3:
setblackgeneration,setundercolorremoval("Color control")sethalftone("improvements")
According to the PostScript Language Reference Manual, 3rd ed. (Appendix A.2), all three are LanguageLevel 2 operators. setblackgeneration and setundercolorremoval also existed earlier, as part of the Level 1 CMYK color extension.
Suggested fix: move them to level-2.adoc, or say on level-3.adoc what actually changed in Level 3 instead of listing them as new operators.
Context: claricle/postscript reads operator levels from these pages (claricle/postscript#4). For these three it uses the PLRM level instead, in data/operator_overrides.yml, and each entry's reason links back here.
Activity
HassanAkbar commentedon Oct 23, 2026
Fixed in #13, now on
main.docs/levels/level-3.adoc: the "New Operators" list no longer includessetblackgeneration,setundercolorremovalorsethalftone. It now lists only operators that really are new in Level 3 (shfill,setsmoothness, and the image masking, DeviceN and trapping operator groups).docs/levels/level-2.adoc: the "New Operators" list now includessethalftone,setblackgenerationandsetundercolorremovalunder halftone and color-rendering control, as PLRM 3rd ed. Appendix A.2 has them.The levels pages now agree with the PLRM for these three operators. The matching entries in
claricle/postscript'sdata/operator_overrides.ymlcan be removed the next time that data is regenerated from these pages.Closing.