# P: Block part messages
# q: Block quit messages
# o: Don't match against opers
+# r: Don't match against registered users
# c: Strip color codes from text before trying to match
-# *: Represents all of the above flags
+# *: Represents all of the above flags except r
# -: Does nothing, a no-op for when you do not want to specify any flags
# Example filters: