Did somebody once propose an modified form of multipart/alternative, with
reversed ordering of the alternative parts (i.e. high-to-low fidelity
rather than the standard low-to-high)?
In its present form, multipart/alternative is not an option for low-memory
receiving systems.
(I am aware of Laurence Lundblade's proposal
<draft-lundblade-1pass-mult-alt-01.txt>, now expired, for a header to
simplify one-pass processing by listing the inner content types.)
#g
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Graham Klyne
(GK(_at_)ACM(_dot_)ORG)