(Display Custom): Mention overlay-margin in text.

diff --git a/man/display.texi b/man/display.texi
index 5f06458dae137b37517c39bf8b76a40a697110e3..c14bdc352b269cd61d2fd0eb26a52dee3ece2726 100644 (file)
--- a/man/display.texi
+++ b/man/display.texi
@@ -1226,7 +1226,7 @@ amount of time Emacs must remain busy before the busy indicator is
 displayed, by setting the variable @code{hourglass-delay}.
 
 @vindex overline-margin
-  On graphical display, this variables specifies the vertical position
+  On graphical display, the variable @code{overline-margin} specifies the vertical position
 of an overline above the text, including the height of the overline
 itself (1 pixel).  The default value is 2 pixels.