function of Time Interval for Straight-Line polymove

Hey, I'm stille quite new to LV would like to know what  the Time Intervall property for a straight line polyline move does. 
I have an idea but am not sure. 

I tried to study the behavior using the "Offline Polyline Move" example.
As far as I've understood it, the Time Intervall specifies how many points are used to interpolate a line move form A to B.