This is FORTH, a programming interpreter, compiler with integrated editor.
It comes in two versions:
FORTH/COMP (68030+FPU)
FORTHSTE/COMPSTE (68000)

Is is available both in french and english with help files.
A full PDF manual is also available in both languages.

It features:
LONG integer arthmetics
Floating point
TOS/VDI/AES calls
Interface for Supercharger
Interface for M_PLAYER/MP_STE
Interface for M&E graphic modules
And lot more...!

Note: FORTH is still under development. The lastest version, documentation, screenshots can be found here:

(english page)
https://gtello.pagesperso-orange.fr/forth_e.htm

(page française)
https://gtello.pagesperso-orange.fr/forth_f.htm