The last time I used anything similar to this was circa 1995 at secondary school, using Windows 3.11 computers, that has been set up so you could only launch a small number of authorised applications.

One of those was Word.

In Word you could write macros and use shell to launch other applications.

Suddenly the locked down computer that exposed a handful of applications could run anything (well anything a Windows 3.11 machine in 1995 could run).

It was quite exciting at the time, I don't feel like I have hit the same sort of issues since. Ocassionally I see people say that some touch screen information displays (in shops/shopping centres etc) have ways to escape from kiosk mode (locked to an app) so you can use them for anything, I guess that is similar.