-void FiltersActivate( void );
-bfilter_t *FilterCreate( int type, int bmask, const char *str, int exclude );
-bfilter_t *FilterAdd( bfilter_t *pFilter, int type, int bmask, const char *str, int exclude );
-bfilter_t *FilterListDelete( bfilter_t *pFilter );
-bfilter_t *FilterAddBase( bfilter_t *pFilter );
-void FilterUpdateBase();
-bool FilterBrush( brush_t *pb );