The Undo Preferences Tab

The Undo Preferences Tab

This page of the preferences notebook controls the number of undo levels used by the program (i.e., how many actions can be undone):

wnd_preferences_undo.gif

To change the number of undo levels, click on the entryfield and type in the desired number or use the scroll buttons to increase or decrease the number. Values between 1 and 500 are valid. Note that changing this setting clears the undo buffer, meaning that you cannot undo actions that were performed prior to changing the setting.