Existing Wording: In a few special cases, humans customarily use codes directly for elements that have type

"string". A typical case is codes for states, and there are several places where a URIs must

come from a set of controlled values. An element of type string (datatypes.html#string) or uri

(datatypes.html#uri) can also be bound to a value set. When a string or uri is bound to a value

set, the value property SHALL contain the code specified by the value set, and the system and

display values are ignored.

Comment:

Typo - "and" misspelled in second sentence