Skinpercent Context?

Hey guys.. I am trying to use skinPercent to find out what joints are weighted to a single vertex.
I cant seem to figure out the order of the -q and the -t or the syntax they need to be in to get the return I need.

Basicly I need a way to find the joints... something like

string $joints[] = skinPercent -q -t skinCluster1 body.vtx[101];
then $joints would be whatever joints are weighted to body.vtx[101], like, spine_1 spine_2 spine_3

What options do I need in skinPercent to get that output?