Labels:text | screenshot | font | letter | document OCR: Contact Proximity Sensors Explore Motion Walker Message Lag Motion SYSIET Figure 2: The organization of the multiple stale machines (in the boxes) for the robot in a subsumption scheme. Motion-control messages coming into the "S" nodes vertically will override a message coming into the node from the horizontal direction. Note that in the absence of any overriding messages, the robot will walk straight forward.