A multiped, capable of traveling in more than one direction along a
molecular path in a nano-robotic system where the steps taken by the feet
of the multiped are controlled in a sequence specific fashion, is
presented. The feet of the multiped dock to footholds on the molecular
path via cohesion with "set" molecules and are released from the
footholds through the introduction of "unset" molecules that detach or
strip away the "set" molecules.