There is another possibility for underlining by using overstriking with \z and \(ul
##### overstrike.groff This underlines the 3 character part "tar" of the word "start": .br .\" ft CR before s\ \z\[ul]t\ \z\[ul]a\ \z\[ul]r\ t after ##### This works correctly with troffs, e.g. $ groff -Tps overstrike.groff $ groff -Tpdf overstrike.groff etc., also in $ groffer --tty overstrike.groff but not in normal groff text modes like -Tlatin1, -Tutf8, etc. The ancient RUNOFF (pre-roff) method was much simpler with special charcters &, ^&, and \&. With some work, the roff overstrike method \z could become useful for groff underlining. Bernd Warken
