Specify the frequency of SURFCAM's automatic save. Set this parameter to zero if you do not want an automatic backup.
SURFCAM generates a file called *n.Scprt-tmp for the current drawing, where n is zero for the first copy of SURFCAM running, 1 for the second copy running, etc.
If the power fails, or the user re-boots the computer while using SURFCAM, the TMP file will automatically be recovered the next time SURFCAM is started.
Note that when SURFCAM is exited normally, the TMP file will be erased.