lm-header-prefix

lm-header-prefix is a variable defined in `lisp-mnt.el'.
Its value is

"^;+[ 	]+\\(@(#)\\)?[ 	]*\\$?"

Documentation:
Prefix that is ignored before the tag.
For example, you can write the 1st line synopsis string and headers like this
in your Lisp package:

;; @(#) package.el -- package description
;;
;; @(#) $Maintainer: Person Foo Bar $

The @(#) construct is used by unix what(1) and
then $identifier: doc string $ is used by GNU ident(1)

You can customize this variable.