A spout for use with a container for dispensing a substance from the container such that any remaining substance exterior to the container adjacent the spout may be allowed to drain back into the container. An arbor of the movable component includes a main protruding portion which forms the largest radius of the movable component about this axis. The locking tabslots facilitate assembly with a locking tab cartoner. Opposite sides of the frame respectively define two through holes therein. Sealing gap is closed by a thixotropic medium in the region of groove bounding the spiral stage. In another aspect of the present invention, the shared memory is partitioned for use from among a plurality of groups of agents, each agent group comprising one or more agents.