This key name is not usually required except on advice from Compsoft, and can take the following values:

• 0: no effect
• 1: make the optimise database query index checkbox default to checked
• 2: send a certain amount of debug to the device specified by the debug= ini key
• 3: 1+2
• 4: send more detailed debug
• 5: 4+1
• 6: 4+2
• 7: 4+2+1