Comment by FarmerPotato

I recall that IBM had a lot of manuals on how to design TUI , known as CUI then. Especially around the advent of OS/2 and PM, as it seemed every DOS app was gaining imitation menus and windows.

A hallmark was that functionality must fit CUI and GUI front ends alike. Keyboard shortcuts would be identical.

I first read about the unified CUI principles in Dr Dobbs' Journal.

It seems a lot of that knowledge is lost or never made in it on the web.