The messenger icon looked back over its shoulder, then stepped briskly put of her way, shunting to the violet line to their immediate right. The message icons there adjusted position so as to maintain then: proper intervals. Piper advanced. The other messenger icons ahead of her in line looked back and shunted out of her way as well, permitting her to walk directly to the service desk SPU at the head of the node. One of the white-uniformed control modules there watched her approaching and bowed.