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sequence presentation type

    Date: Fri, 25 May 90 16:02:49 -0600
    From: andreas@boulder.Colorado.EDU (Andreas C. Lemke)

    Shouldn't the sequence presentation type allow zero-length sequences
    as well?  The doc says its for one or more objects, which is
    inconsistent with general common lisp parlance.

If there's a default available, how would you distinguish between the
user hitting Return to get the default from hitting return to type an
empty sequence?