Text
The Backup switch determines what happens to the old copy of a file before the new version is saved to disk.
Backup:[[undel|bak]]
(none)
No backup: PWB overtypes the file.
undel
PWB moves the old file to a hidden directory so you can retrieve it with the UNDEL utility. The number of copies saved is specified by the Undelcount switch.
bak
The extension of the previous version of the file is changed to .BAK.
Backup:bak