I've successfully used troff to write our commercial contract.
I collaborated with a guy at Fenwick&West, taught him enough troff -ms
that he could make changes. We sourced 6 different contracts from one doc
and the lawyer *loved* that, he really wanted that fuctionality in Word.

I may need to start doing that for the routine leases I do for some rental property I own. I lamely just do some word fill in the blank things now, but I may have to switch :)

Warner