Dan Bricklin's "Demo" is a tool for creating tutorials, interactive
application demonstrations, and interface prototypes. It has a
powerful scripting system, with the ability to store and manipulate
both text and graphics screens, and a redistributable runtime.
author of VisiCalc. Demo was first released in 1985 by Dan Bricklin's
consulting firm Software Garden. It was later sold under Peter Norton
Computing, and then Sage Software.