IBM 3730
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The IBM 3730 is a word-processing variant of the IBM 3790, announced in the late 1970s. It used 3790 hardware but its software made it a dedicated shared-logic word-processing system which could support a dozen or more word-processing IBM 3732 terminals.
It could be connected using Systems Network Architecture to a central mainframe running IBM DISOSS which was a centralized document exchange software running on CICS.