Options:

Auto start:
Automatically starts SolarSys Notebook Shadow when Windows loads.

Run minimized:
Runs Notebook Shadow as an icon in the System Tray. Click the icon to restore to normal size. This feature must be used in conjunction with Auto start and if switched on then Auto start will automatically be switched on.

Run on startup:
Performs a 'scheduled' run on startup and if you use a rewritable PD/CD ROM or Zip drive etc. for backup, whenever you swap disks.

Small files first:
Sorts the files so that the smallest get shadowed first.

Query all saves:
Use this option if you need to review the list of files before they are shadowed. You can then choose which of them to commit.

Verbose log:
Shows more detail in the log window and saves more on the log file.
Use sparingly.

Keep log file:
Keeps a log file in the default backup folder of all activity.  This file can get very large if left on for long periods and should be deleted regularly.  It is best to use it for analysis purposes only then switch it off.  The view button gives you access to the log file and provides a search facility.

More Options:

SolarSys file copy:
Choose between the SolarSys file copy function and the standard Windows file copy function.  The SolarSys file copy function has the additional feature of a progress bar for files greater than 500Kb.

Safe file copy:
If this option is checked then Shadow always copies to a temporary file first and then when the copy has completed, the temporary file is renamed to the required backup filename. 
If this option is unchecked then Shadow copies directly over the existing backup.
The advantage of the Safe mode is that, if the save is interrupted by a PC or network crash etc. the original files are not corrupted.
The disadvantage of Safe mode is that it needs more working space on the drive being copied to as two copies of the file are stored temporarily. This can be a problem if the file sizes are large and space is limited.
Always use safe mode if you have enough drive space.

The temporary file name is constructed by prefixing the filename with "~~" (eg. d:\Shadow\c\My documents\~~Myfile.doc). 
These temporary files will only exist for a short time during the copy process. If copying is interrupted the temporary file will by left on the disk but is will be removed the next time Shadow is run.

Small files first:
Sorts the files so that the smallest get shadowed first.

Validate changes:
Uncheck this option if you do not want all changes to the Shadow specification to be validated. You can still validate manually at any time by checking the 'Validate spec ?' checkbox.

Minimize on X:
Uncheck this option if you want the Shadow application to close when you press the X button. If this option is checked then Shadow minimizes when the X button is pressed to prevent accidental closure.