What's the difference between sequenceKind and floating?

[Costello, Roger L.]

Hi Folks,

sequenceKind = ordered means the items must occur in the order specified by the 
schema.

float = no means the items must occur in the order specified by the schema.

sequenceKind = unordered means the items can occur in any order.

float = yes means the items can occur in any order.

sequenceKind and float mean the same thing, yes? Then why have both?

/Roger