(...) I'm not positive, but I think the R2-D2 may be part of a larger class of Astromech droids. (Not all R2 units have hemispherical heads like R2-D2.) C-3PO (and TC-14) are Protocol Droids, IIRC. [crossposted to .starwars for verification :-] (...) (25 years ago, 14-Apr-00, to lugnet.cad.dev, lugnet.starwars)
