A strut-type synchronizer for coupling a gear to a rotating shaft includes a hub rotating with the shaft, a clutch ring rotatable with the gear, and a friction ring disposed between the hub and the clutch ring. The alignment load-lock includes an alignment stage that aligns a wafer during pump-down. Each of the sponsor symbol corresponds to an entity that has paid an owner of the home WWW site for the right to be presented to the user on the site. The method may be carried out in a batch-cleaning mode, in which fresh charges of cleaning gas are successively introduced to a chamber containing the residue-bearing microelectronic device structure.