I was a user of Zortech C 1.0. I loved its disp_* functions.

One program (com) I wrote with it back then is still being used by at least one person. I talked to them a couple of months ago and they said they still use it.

Wow! good to know.

I used it for Empire, and for my text editor. When moving to Linux, it was easy to convert to using TTY sequences.