This can restrict which messages are checked for repetition. Once a message has passed this test, it will be compared against previous messages of the same user (even ones that would not pass this test, if you match on the message text).

Examples: You can also combine prefixes: !status:M mystatus:M

More Information: [url:https://www.youtube.com/watch?v=55n7ZWaaRIg Video tutorial], [help-settings:Highlight_Meta_Matching Meta Prefixes]