Soft ride mode on B747

From: (Saurin B. Shroff; x6284)
Organization: Cadence Design Systems
Date:         07 Mar 94 15:12:37 PST
Followups:    1
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On a recent trip from London to Boston on British Ariways, at around FL310, 
the ride suddenly became rough due to turbulance. The captain then announced
that the turbulance was unexpected and he has turned on soft ride mode to
give us softest ride possible (we were being served lunch then). We were
flying B747.

Does anyone know what is soft ride mode and how does it work? After the
announcement the ride seemed bit softer but not whole lot.

-- Saurin B. Shroff