+#
+# Valid characters for 'flags' are one or more of:
+#
+# p: Block private and channel messages
+# n: Block private and channel notices
+# P: Block part messages
+# q: Block quit messages
+# o: Don't match against opers
+# *: Represents all of the above flags
+# -: Does nothing, a non-op for when you do not want to specify any flags
+#
+# IMPORTANT NOTE: Because the InspIRCd config reader places special meaning on the
+# '\' character, you must use '\\' if you wish to specify a '\' character in a regular
+# expression. For example, to indicate numbers, use \\d and not \d. This does not
+# apply when adding a regular expression over irc with the /FILTER command.