Minimum requirements are Mac OS X 10.4 and access to a HylaFAX server.
Providing that you have already run MacHylafax for the first time, select print from your application.
You will notice a 'PDF Menu' option at the bottom of the window. Click this, then select 'Send To MacHylafax'. You can also run MacHylafax in
standalone mode (by launching it in the normal way from your finder). In this mode, you will be asked to select a document to fax.