How to load a swi-prolog program

I have a power Macintosh G5 working with Panther (MacOS 10.3).

I have installed SWI-Prolog, and saved a short Prolog program (named prog1.pl) in the home (named ab ).

In the Terminal, I go to /user/local/bin/swipl
I use consult
and after that I don't know how to load my program

Here a copy of the screen.
----------------------------------------------------------
Last login: Mon Sep 19 15:02:10 on ttyp1
Welcome to Darwin!
tok69-5-82-235-150-51:~ ab$ ls

Applications Enregistrement Music Sites musique
Desktop Library Pictures TP1.pl prog1.pl
Documents Movies Public
tok69-5-82-235-150-51:~ ab$ cd /usr/local/bin

tok69-5-82-235-150-51:/usr/local/bin ab$ swipl
Welcome to SWI-Prolog (Multi-threaded, Version 5.4.7)
Copyright (c) 1990-2003 University of Amsterdam.
SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions.
Please visit http://www.swi-prolog.org for details.

For help, use ?- help(Topic). or ?- apropos(Word).

?- consult('
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How to load "prg1.pl" ?

I need help.
Thanks in advance
luisa