diff --git a/alliance/src/graal/man1/graal.1 b/alliance/src/graal/man1/graal.1
index bd29512a..4fd193f7 100644
--- a/alliance/src/graal/man1/graal.1
+++ b/alliance/src/graal/man1/graal.1
@@ -1,4 +1,4 @@
-.\"   $Id: graal.1,v 1.1 2002/03/29 17:39:57 ludo Exp $
+.\"   $Id: graal.1,v 1.2 2004/12/21 22:10:51 fred Exp $
 .\" @(#)graal 1.07 94/10/10 UPMC/ASIM/LIP6/CAO-VLSI "
 .TH GRAAL 1 "October 1, 1997" "ASIM/LIP6" "ALLIANCE Reference Manual"
 .SH NAME
@@ -25,7 +25,13 @@ When entering
 .B Graal,
 the main window appears and shows 7 different
 menus on the top bar.These menus can be entered by simply clicking on the
-mouse left button. Here is the description of these menus.
+mouse left button.
+The main window is sensitive to the mouse, and the mouse wheel can be
+used for scrolling up and down, left and right when <Shift> is pressed
+during wheel movement, and zooming in and out, when <Ctrl> is pressed
+while turning the wheel.
+
+Below is given the description of graal's menus.
 
 .TP 10
 .B File