Undo / Redo

Almost all user actions can be undone. To undo the last action, select Edit > Undo from the menu, use the toolbar button, or use the Ctrl+Z keyboard shortcut combination. After you Undo an action, it is possible to repeat this action again by selecting Edit > Redo from the menu or the toolbar .

The program keeps all user actions in a special queue, so that Undo can be performed as many times as desired, until the project is returned to its original state. Saving the file will clear this queue, making Undo / Redo unavailable. The Redo queue is also cleared after you perform a new action.

The following actions cannot be undone:

• Changing to grayscale mode or changing font size.
• Saving the current Custom support list as the program default list.
• Recomputing statistical results.