meaning of code

[yak]

Hi i was wondering what this code means

import viz

viz.go()

wheelbarrow = viz.add('vcc_male.cfg')
wheelbarrow.translate(0,1,3)

wheelbarrow.state(2)
wheelbarrow.rotate(0,3,0, -90)
viz.clearcolor(0.5,0.5,1)



def myslider(obj, pos):
wheelbarrow.runAction( vizact.spin(0,-1,0,500*pos) )


viz.callback(viz.SLIDER_EVENT,myslider)


I keep getting my male model to spin while walking. What I am trying to accomplish is that the slider controls my models walk. so if i slide my slider to teh end, my male model has completed one cycle of walking...If i slide it back he is being reversed(kind of like a fastforward and rewind )....I dont know if that made any sense.