Every time a box is checked or a number is entered in the adjustment area, it is recorded in one of the ini files. If the system crashes, power goes out, or windows pukes, don't panic. All of your entries can be restored by pushing this button.

In the event that you do need to restore a previous session, make sure that you push the restore button before you do ANYTHING else. Just putting a check in a box will overwrite your restore file and all data will be lost.