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	Interface	Description
	IFilter	Defines a common interface that must be implemented by all the filters.

	Class	Description
	AbstractFilterDecorator	The base abstract class of all concrete filters.
	CategoryFilter	Filter applied to log's category
	DateFilter	Filter applied to log's date
	Filter	The only pourpose of Filter is to be wrapped by one or more filters (classes which extend AbstractFilter)
	LevelFilter	Filter applied to log's level (warning, info, error...)