A !pattern! uses an astrisk (*) for a wildcard, scanning over zero or more characters; a question-mark (?) matches any single character; a backslash followed by any character treats it as a literal (it loses any special meaning).
A format-path string comprises of literal characters and percent-sign (%) prefixed format characters:
%%A literal percent-sign (%) %AThe original address, equivalent of %T%P@%D. %DThe domain name portion. %LThe left-hand-side of a plus-detailed address or the local part. %PThe local-part. If %R is not empty, then "%L+%R", else "%L". %RThe right-hand-side of a plus-detailed address or the empty string. %SThe source-route, ie "@A,@B,@C", or the empty string. %TIf %S is not empty, then "%S:", else the empty string.
Some format-path examples: