After the Macintosh has properly booted and a printer has been selected, open the
Applications or Hard Disk icon, and then the MacProlog icon.
The MacProlog folder opens to reveal the available application tools. You can
now enter the MacProlog32 programming environment, by double-clicking on the
MacProlog32
icon. It may take a while to load the environment as this is a large system. The
cursor changes to a set of binary numbers while the system is being loaded.
After MacProlog32 has loaded, a window is displayed at the bottom of the screen.
This is the 
Output Window where answers to Prolog queries and evaluations will
normally appear. This window can be edited as any other window in the environment.