+++ /dev/null
----
-layout: default
-title: Undo/Redo for Editing
----
-
-<p>
- While editing, it happens that you apply an unintended change, or make
- a choice one that you later decide was wrong. All changes to the
- arrangement of session components (regions, control points) along the
- timeline can be <dfn>undone</dfn> (and <dfn>redone</dfn> if necessary).
-</p>
-<p>
- The default keybindings are <kbd class="mod1">Z</kbd> for Undo and
- <kbd class="mod1">R</kbd> for Redo. These match the conventions of most
- other applications that provide undo/redo.
-</p>
-<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>
-<p>
- The maximum number of changes that can be undone can be configured under
- <kbd class="menu">Edit > Preferences > Misc > 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>.
- There is also an undo for selection. See
- <a href="/ardours-interface/basic-gui-operations/selection-techniques/">Selection Techniques</a> for more information.
-</p>