In mdoc(7) and man(7), if a width is given as a bare number without

In mdoc(7) and man(7), if a width is given as a bare number without
specifying a unit, the implied unit is 'n' (on the terminal, one
character position; in PostScript, half of the current font size
in points), not 'u' (roff output device basic unit).  No functional
change right now, but important for the upcoming scaling unit fixes.