Filters:
The entries in the Filters screen are an important part of Drive Cleaner's scanning technology. As the name implies, they "filter" out the garbage from the useful data.
Exceptions:
The entries in the Exceptions screen protect important data that might otherwise be identified as redundant, because it has the same characteristics as redundant data. For example, these entries includes critical folders whose contents should never be scanned for redundant data, and files that should not be deleted even though they have standard temporary-file extensions like *.bak and *.tmp.
SYSTEM SECURITY WARNING:
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Please do not EVER change or delete ANY of the default entries in the Filters and Exceptions screens!
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What to do if you accidentally delete default entries:
If you ever accidentally delete default Exceptions or Filters entries the best thing to do is to is to restore the program defaults. You will lose any manual entries you may have added (you may want to make a note of these first so that you can add them again afterwards), but this is the only way of being absolutely sure that you are not missing any key entries.
Adding your own exceptions:
In the course of time you may want to add your own exceptions to protect personal folders, files and other data that would otherwise be identified as redundant. For example, you may have individual *.bak and *.tmp files that you want to keep, or you may have less well-known programs that use non-standard extensions for important files.
See the on-screen instructions for details on adding exceptions to the file and folder lists.
Rule: | Since exceptions always protect data, adding them is always safe. Deleting exceptions is always risky, because it reduces your protection level. See Restoring the Defaults for instructions on restoring the default exceptions settings.
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Adding your own filters:
This is much more critical. Adding filters will always identify more items as redundant, so you really need to be sure of what you are doing. If you do add your own filters you should always check the Results / Details screen before deleting anything to make sure that you're not deleting anything important!
Rule: | Since filters always identify data as redundant, adding them is always risky. Deleting filters is always safe because it identifies fewer items as redundant - but it also reduces Drive Cleaner's Windows® cleanup performance. See Restoring the Defaults for instructions on restoring the default filters settings.
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