Name
xs:ID
Facets
xs:enumeration,
xs:length, xs:maxLength, xs:minLength, xs:pattern, xs:whiteSpace |
The xs:ID type provides
compatibility with the ID attribute type from XML 1.0 DTDs. Like
those IDs, the contents of the xs:ID type must start with a letter and
contain letters, digits, underscores, or colons, and the value
must be unique within the document. (If you need more
sophisticated tests of uniqueness, use the xs:key, xs:keyref, and xs:unique structures.)
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