C Variables: {CE, My_term, TI, VS}: What are they?

[a hacker]

I recently received a source file which contained these variables
which DO NOT compile on a System V Release 2:

CE
My_term
TI
VS

This program is supposed to compile on a BSD, Sys 3, Sys V (r 1).
I believe these are part of curses.h or termio.h (terminfo.h).

Can anyone tell me what these do?

Thanks,
hou2e!ksl