[NTG-context] Fwd: issue: "printable" viewer layers lack compatibility

From their repository you can see that poppler (i.e. evince) also checks

In 2017 ghostscript added support for the /Print and /View keys of the Optional Content /Usage dictionary[1]. The use of '-dPrinted' should display the print-only layer, per the documentation[2]: gs -o output.pdf -sDEVICE=pdfwrite -dPrinted input.pdf the /Print and /View keys[3]. I'm reporting this here since neither render ConTeXt's "printable" viewer layers - not while viewing, and not after printing. [1] http://git.ghostscript.com/?p=ghostpdl.git;h=9e621d6ffb0e29c5de8331bf2c95003... [2] https://ghostscript.com/doc/current/Use.htm#PDF_switches [3] https://gitlab.freedesktop.org/poppler/poppler/blob/master/poppler/OptionalC...