I am woefully unenlightened about *roff.  In writing a man page for a
device driver for NetBSD, I discovered that the following:

.Nm lt

produces no output in the resulting file, while 

.Nm ell-tee

and

.Nm LT

both Do The Right Thing.  Do I need to rename my driver? :-)

Clearly the character string "lt" is "magic" in some way, as it
appears often in the tmac files in /usr/share/tmac/*

How do I "quote" it?

						- Bill

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