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When should I use this class
If you are an admin and want to stop bad input from outside
If you are a developer and want to have cleaned piVars
Why should I use this class in my extension
hy should I use this class in my extension
I will extend this class as often as possible
You can save some code
You could be sure against bad behaviour (from piVar hacks)
wt_doorman uses a newer removeXSS class as offered in TYPO3 4.2