How to put comments in nroff/troff source: '"\'? '..'?

[neal at druny.UUCP]

Ok, I give up!  I tried putting ".." at the begining of each line,
but that sometimes leaves bird droppings in my output.
I tried putting '\"' at the beginning of each line, but if I
do that for several lines in a row, a large blank area appears in the
output.

So how do you put a block comment in?
-Neal McBurnett, ihnp4!druny!neal, 303-538-4852