elif string.find(command, "VALL",0) == 0:
self.do_vend_all()
elif string.find(command, "V",0) == 0:
self.do_vend(command)
elif string.find(command, "B",0) == 0:
self.do_beep(command)
elif string.find(command, "VALL",0) == 0:
self.do_vend_all()
elif string.find(command, "V",0) == 0:
self.do_vend(command)
elif string.find(command, "B",0) == 0:
self.do_beep(command)