Int quesstion

 From:  -Gwozik- (PP)

I've started create video tutorials for MoI and I've a stupid question.
I understand mid (middle), origin, perp (perpendicular), end, on, but I've no idea about "Int".
I haven't seen the answer in the command reference (sorry if I missed it).

Thanks in advance if someone knows.

They should buy MoI in my school by the end of the week.