If the Quick-start Guide didn't answer your question, the Detailed User's Guide provides in-depth information on all features SafeShred offers.
What is Shredding?
Shredding Files
Shredding the Trash
Shredding Free Disk Space
Shredding Entire Volumes
Setting the Shredding Pattern
Setting the Shredding Level
Selecting Shredding Sounds
Setting SafeShred Behavior
Upgrading SafeShred
AppleScript Support