Not that it matters greatly, but FYI this app ran on a product called 4th Dimension, a 4GL app-building environment running a proprietary database on Macintosh

Not that it matters greatly, but FYI this app ran on a product called 4th Dimension, a 4GL app-building environment running a proprietary database on Macintosh desktop systems. They also had a client-server version that ran on local networks. There was a runtime engine, or for big money you could buy a compiler that would build standalone executables. They eventually pivoted to supporting the web (and PHP!), but this story predates all of that. 4th Dimension was orginally called "Silver Surfer," and it is the centerpiece of a story Guy Kawasaki used to tell about how big companies work. Apple was trying to get everyone to write software for the new Macintosh, they gave free hardware and engineering support to Ashton-Tate to port its popular PC database to Mac, &c. Meanwhile, indie companies like Aldus (who would go on to literally rescue Apple when they released PageMaker) and ACIUS (A company Guy formed in partnership with the original developer to distribute 4th Dimension) shipped software that people actually bought and actually used. https://en.wikipedia.org/wiki/4th_Dimension_(software) https://en.wikipedia.org/wiki/4th_Dimension_(software) Apple would have done better if they'd told people like Ashton-Tate to "Ship or GTFO," but the history of technology companies is one of people skating to where the puck has been...