Hi Steve, Peter wrote: > \& is a zero-width, non-printing character whose most usual use-case > is to prevent groff from interpreting a period at the beginning of an > input line as a control character.
groff's info on it:
info groff Requests | less -j15 +/'\\\&'
And more in ยง4.1 of CSTR 54: https://troff.org/54.pdf
It's also used by tbl to mark the point of alignment in text.
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Cheers, Ralph.
