Document gtk-graphics/clear.

diff --git a/doc/gtk/gtk.texinfo b/doc/gtk/gtk.texinfo
index 3bcac0ea4ab8a19329cfb576855a98fb6011578b..7c923ff2b25d529b1f5c8c0c9eeeb828c9bfd67f 100644 (file)
--- a/doc/gtk/gtk.texinfo
+++ b/doc/gtk/gtk.texinfo
@@ -273,6 +273,11 @@ operations.  @var{Color} can be a color name or specification.
 @xref{colors}.
 @end deffn
 
+@deffn Procedure gtk-graphics/clear device
+Paints the background color over all of @var{device}'s Cairo surface,
+after resetting its clip region.
+@end deffn
+
 @deffn Procedure gtk-graphics/flush device
 Applies @bref{cairo-surface-flush} to @var{device}'s Cairo surface,
 and updates any drawings containing @var{device}'s descriptor, a