assume, when resumed, that the screen page it is using still contains
what Emacs last wrote there.
+@vindex overline-margin
+ On graphical display, this variables specifies the number of pixes
+the overline is shown above the text. The value includes the height of
+the overline itself (1 pixel). The default value is 2 pixels.
+
+@vindex x-underline-at-descent-line
+ On graphical display, the underline is normally drawn at the
+baseline level of the font. If @code{x-underline-at-descent-line} is
+non-@code{nil}, the underline is drawn at the same position as the
+font's decent line.
+
@ignore
arch-tag: 2219f910-2ff0-4521-b059-1bd231a536c4
@end ignore