Well the question is how is it wired up? If you wired it where it loops up and down then you need to define zig-zag in either xLights or the controller. xLights would probably be the easiest.
Strands per string does the zig-zag. For instance if you tell it to be 1 string, 4,465 nodes per string, and 95 strands per string then each strand is 47 pixels long in a zig-zag pattern.