An undocumented use of the .char request is mapping a special character to a diversion holding a graphic image so the image can be used as a glyph.
=== .\" 1.23.0.2146-d958f-dirty .\" Build with pdfmom(1); output to pdf . .sp 6P-1v . .nr img-w 25p .nr img-d 22p . .di img-div .ev img-div .nf \X'pdf: pdfpic GNU-head-small.png' .ev .di . .char \[img] \h'-\w'.'u'\m[white].\m[]\*[img-div] . .ds gnu \v'-\n[img-d]u'\[img]\h'\n[img-w]u' . .nop A GNU head \*[gnu] image. === I'm attaching GNU-head-small.png if anyone wants to test this out. The mapped diversion requires a glyph--any glyph--beforehand or it won't output in position (hence the whited-out period kludge). Can anyone explain why this is? -- Peter Schaffter https://www.schaffter.ca
.\" 1.23.0.2146-d958f-dirty .\" Build with pdfmom(1); output to pdf . .sp 6P-1v . .nr img-w 25p .nr img-d 22p . .di img-div .ev img-div .nf \X'pdf: pdfpic GNU-head-small.png' .ev .di . .char \[img] \h'-\w'.'u'\m[white].\m[]\*[img-div] .ds gnu \v'-\n[img-d]u'\[img]\h'\n[img-w]u' . .nop A GNU head \*[gnu] image.
gnu-head.pdf
Description: Adobe PDF document
