The slide show is a product description of the 727 Systems Simulator, scheduled for release in August 1993.
To open the slide-show, just double-click on the "727 Slide Show" icon. The show should load automatically. To advance from screen to screen, click the mouse; to exit, use command-period.
You will need about 1200K on disk in order to run the slide show. The slide show software may not work on Macintosh IIsi's. Sorry. If it doesn't, it'll probably lock up and crash if you try to do anything.
The slide show software is PICTShow 1.5, written by Oliver Dreer, and may be found on many ftp sites and online services.