For any Orlicz function Phi and any sigma-finite atomless measure mu,
a criterion for x from the unit sphere of the Orlicz space L(Phi)(mu),
equipped with the Luxemburg norm, to be strongly extreme is given. Fu
rther, Orlicz spaces L(Phi)(mu) which are isometric to L(infinity)(mu)
are characterized. (C) 1995 Academic Press, Inc.