Specifying the Number of Undo and Redo Actions

  To specify the number of permitted undo and redo actions:

1. From the Smart View ribbon, select Options, then select Advanced in the left panel.

2. In Number of Undo Actions, specify the number of permissible Undo operations, 0 through 100.

   This is also the number of Redo operations permitted.

3. Click OK. The setting takes effect after you refresh or perform a drill operation.