Item types

Item types are the first component of a sequence type, together with the cardinality indicator. Thus, an item type matches (or not) a single item. For example, "foo" matches the item type string.

There are three categories of item types:

All items match the item type item. Unliked in the underlying W3C specification, the type item is not followed by parentheses (i.e., item and not item()).

Figure 5. ItemType