I have been using Troff for about 25 years. I migrated from GNU Troff (groff) to Heirloom Troff because the latter has a very great support for typography and m

I have been using Troff for about 25 years. I migrated from GNU Troff (groff) to Heirloom Troff because the latter has a very great support for typography and micro-typography. Not only does it use Knuth's algorithm for typesetting, but it also includes many features unknown to LaTeX (you can even typeset paragraphs with constant spacing between words if you agree to put your extra spaces between letters or even by hiding them in applying a tiny horizontal zoom to your glyphs!). Support for arbitrary OTF fonts is much easier than with LaTeX also.