gbranden pushed a commit to branch master
in repository groff.
commit 9033140e2e058b6ac3faecf469e7f89af4481901
Author: G. Branden Robinson <[email protected]>
AuthorDate: Thu Aug 17 05:57:46 2023 -0500
doc/groff.texi: Improve discussion of `fzoom`.
---
doc/groff.texi | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/doc/groff.texi b/doc/groff.texi
index 83abc8180..769b4cdcb 100644
--- a/doc/groff.texi
+++ b/doc/groff.texi
@@ -10447,11 +10447,16 @@ altering a font's apparent size in relation to
others. A missing or
zero @var{zoom} is treated as @samp{1000}---no magnification.
@var{font} must be a resolved font name, not an abstract style.
-Font magnification is transparent to GNU @code{troff}; a change of the
-zoom factor affects scaling of glyph sizes, inter-word and
-inter-sentence spaces, and kerning adjustments on the output device. It
-is not reflected in registers that report the requested or current type
-size, or the measurements reported by the @code{\w} escape sequence.
+Font magnification is transparent to some aspects of GNU @code{troff}.
+A change of the zoom factor affects scaling of glyph sizes, inter-word
+and inter-sentence spaces, and kerning adjustments on the output device,
+but @emph{not} vertical spacing. It is not reflected in registers that
+report the requested or current type size, or the minimum inter-word and
+additional inter-sentence space sizes. It @emph{is} reflected in
+measurements of formatted output:@: the horizontal drawing position
+register, interpolation of the @code{\w} escape sequence, and the
+registers updated by that escape sequence or the formatting of a glyph
+in the environment. @xref{Environments}.
@code{fzoom} can harmonize the apparent cap-heights of fonts from
different families when formatted on the same baseline.
@@ -10466,8 +10471,8 @@ and \F[P]Palatino\F[].
M\F[H]M\F[C]M\F[P]M
@endExample
-The zoom factor of the current font is available in the read-only
-register @samp{.zoom}. It interpolates zero if there is no
+The zoom factor of the currently selected font is available in the
+read-only register @samp{.zoom}. It interpolates zero if there is no
magnification.
@endDefreq
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