gtk-screen: New valid value for create-editor-args: (gtk).

diff --git a/doc/user-manual/user.texinfo b/doc/user-manual/user.texinfo
index e64a42bd0a3327c69c75205ff722c3721dc438cf..274caaab6631f53380eb3acd7c14c68a319851b4 100644 (file)
--- a/doc/user-manual/user.texinfo
+++ b/doc/user-manual/user.texinfo
@@ -3930,9 +3930,15 @@ values are defined:
 @table @code
 @item (#f)
 This is the default.  Creates a window of some default size, and uses
-that window as Edwin's main window.  Under unix, if X11 is not available
-or if the @env{DISPLAY} environment variable is undefined, Edwin will
-run on Scheme's console.
+that window as Edwin's main window.  Under unix, if Gtk and X11 are
+not available or if the @env{DISPLAY} environment variable is
+undefined, Edwin will run on Scheme's console.
+
+@item (gtk)
+Unix only.  Creates an X window containing Gtk widgets, mostly Scheme
+canvases.  This requires the @env{DISPLAY} environment variable to
+have been set to the appropriate value before Scheme was started, and
+the @code{gtk-screen} option to have been loaded.
 
 @item (x)
 Unix only.  Creates an X window and uses it as Edwin's main window.