PERMISSIONS Subcommand (PERMISSIONS command)

READONLY. File permissions are set to read-only for all users. The file cannot be saved by using the same file name with subsequent changes unless the read/write permissions are changed in the operating system or a subsequent PERMISSIONS command specifies PERMISSIONS=WRITEABLE.

WRITEABLE. File permissions are set to allow writing for the file owner. If file permissions were set to read-only for other users, the file remains read-only for them.

Your ability to change the read/write permissions may be restricted by the operating system.