mention visual undo

diff --git a/_manual/04_ardours-interface/02_basic-gui-operations/05_undoredo-for-editing-.html b/_manual/04_ardours-interface/02_basic-gui-operations/05_undoredo-for-editing-.html
index 56b975b528b52d8f9d2db272c08d2cd606a237b2..3d0e87d212ffef7c47bdd2043ab3b2cc419a7da2 100644 (file)
--- a/_manual/04_ardours-interface/02_basic-gui-operations/05_undoredo-for-editing-.html
+++ b/_manual/04_ardours-interface/02_basic-gui-operations/05_undoredo-for-editing-.html
@@ -17,11 +17,18 @@ title: Undo/Redo for Editing
 <p>
   Changes are also saved to the <dfn>session history</dfn> file, so that
   undo/redo is possible even if you close the session and reopen it later,
-  even if you quit Ardour in between.</p>
+  even if you quit Ardour in between.
+</p>
 <p>
   The maximum number of changes that can be undone can be configured under
   <kbd class="menu">Edit &gt; Preferences &gt; Misc &gt; Undo</kbd>. 
   The maximum number of changes stored in the history file is a separate
   parameter, and can also be set in the same place.
 </p>
-  
+
+<p class="note">
+  In addition to the normal undo (which works only on actions that change
+  the timeline), there is a <dfn>visual undo</dfn> which will revert any
+  command that affects the display of the editor window. Its shortcut is
+  <kbd class="mod3">Z</kbd>.
+</p>