Unicode input: Making groff 21bit input-clean. Make -Tlj4 work with -X. Guess man5ext and man7ext variables. Provide man.sun implementing .TX. Improve GROFF_PRINT macro in aclocal.m4. Provide a `check' target. Provide a `bindist' target. Implement tmac.bib in terms of tmac.s. Support long options using GNU getopt. Catch the following error in -me: .(z .(l C .)z Arrows for next/previous page from R5 xditview.