How do you specify torsion springs


I have a linkage assembly that I'm running a motion analysis on.I'm trying to specify a trosin spring in the assembly to activatethe linkages. The confusing part is that it doesn't clearly specifywhere the pre-load is set & the direction the spring isactivating. The options are there, but it does not make clear howthe spring will function in the assembly. Can any one explain thisto me better as the help file for this features is clearly lacking.

I'm also still trying to figure out why is askes for both apre-load angle and a starting toque, as the angle and spring factorwill give you the pre-load

Thanks,

JamieSolidworksFlow Simulation