Making callable function of a macro

[Decebal <CLDWesterhof@gmail.com>]

I made the following macro to process some files:
#####
Macro:

ESC <			;; beginning-of-buffer
C-SPC			;; set-mark-command
ESC C-s			;; isearch-forward-regexp
^ =			;; self-insert-command * 2
RET			;; newline
C-a			;; beginning-of-line
2*C-n			;; next-line
C-w			;; kill-region
ESC >			;; end-of-buffer
C-SPC			;; set-mark-command
ESC <			;; beginning-of-buffer
ESC C-s			;; isearch-forward-regexp
^ =			;; self-insert-command * 2
RET			;; newline
C-a			;; beginning-of-line
C-w			;; kill-region
ESC <			;; beginning-of-buffer
ESC C-%			;; query-replace-regexp
C-q			;; quoted-insert
LFD			;; newline-and-indent
ESC 5			;; digit-argument
SPC			;; self-insert-command
RET			;; newline
C-q			;; quoted-insert
TAB			;; indent-relative
RET			;; newline
!			;; self-insert-command
ESC <			;; beginning-of-buffer
RET			;; newline
C-p			;; previous-line
Probleem		;; self-insert-command * 8
C-q			;; quoted-insert
TAB			;; indent-relative
Referentie		;; self-insert-command * 10
C-q			;; quoted-insert
TAB			;; indent-relative
Oplossing		;; self-insert-command * 9
C-a			;; beginning-of-line
#####

Now other people like the functionality that I made. ;-}
But they do not use Emacs. So I would like to change the macro to a
function. In this way the script that is used to generate the input
files, could call Emacs and process them directly. Is this possible?
If so: how would I do this?
I have worked with Emacs, but not really with the Lisp capabilities.
More as an editor.