doc/groff.texi: Fix content nit.

What font doesn't come with multiple parentheses (usually pairs)?

Also, symbol fonts often contain bracket pieces which are sure to have
large both heights _and_ depths.

1 files changed, 10 insertions, 9 deletions

diff --git a/doc/groff.texi b/doc/groff.texi
index cda85f6f8..589bd2bd3 100644
--- a/doc/groff.texi
+++ b/doc/groff.texi
@@ -11632,15 +11632,16 @@ This is a test.
 @cindex spacing, vertical
 These concepts were introduced in @ref{Page Geometry}.  The height of a
 font's tallest glyph is one em, which is equal to the type size in
-points.@footnote{This tallest glyph is typically the parenthesis.
-Unfortunately, in many cases the actual dimensions of the glyphs in a
-font do not closely match its declared type size!  For example, in
-the standard PostScript font families, 10-point Times sets better with
-9-point Helvetica and 11-point Courier than if all three were used
-at 10@tie{}points.}  A vertical spacing of less than 120% of the type
-size can make a document hard to read.  Larger proportions can be useful
-to spread the text for annotations or proofreader's marks.  By default,
-GNU @code{troff} uses 10@tie{}point type on 12@tie{}point spacing.
+points.@footnote{In text fonts, the tallest glyphs are typically
+parentheses.  Unfortunately, in many cases the actual dimensions of the
+glyphs in a font do not closely match its declared type size!  For
+example, in the standard PostScript font families, 10-point Times sets
+better with 9-point Helvetica and 11-point Courier than if all three
+were used at 10@tie{}points.}  A vertical spacing of less than 120% of
+the type size can make a document hard to read.  Larger proportions can
+be useful to spread the text for annotations or proofreader's marks.  By
+default, GNU @code{troff} uses 10@tie{}point type on 12@tie{}point
+spacing.
 @cindex leading
 Typographers call the difference between type size and vertical spacing
 @dfn{leading}.@footnote{Pronounce ``leading'' to rhyme with