(1, 3, 2, 34, 76, "fnord")
(1 to 12)
Using constructors: (xf:date("2002-03-11"), xf:date("2002-03-12"), xf:date("2002-03-13"),
xf:date("2002-03-14"), xf:date("2002-03-15"))
Sequences can have mixed types: (xf:date("2002-03-11"), "Hello", 15)
Sequences do not nest; that is, a sequence cannot be a member of a sequence
Sequences are not sets: they are ordered and can contain duplicates
A single item is the same as a one-element sequence containing th