Note this schema is NOT a normative schema - - It contains attribute types derived from all the attribute definitions found in the XLink Recommendation available at http://www.w3.org/TR/2001/REC-xlink-20010627 Section 4.1 (http://www.w3.org/TR/2001/REC-xlink-20010627/#N1238) provides a summary of the element types on which the global attributes are allowed, with an indication of whether a value is required or optional. The XLink Element Type Attribute. Note: xml:lang is not required if the value of the type attribute is "title", but provides much of the motivation for title elements in addition to attributes. A W3C XML Schema definition of the xml:lang attribute can be found at: http://www.w3.org/2001/xml.xsd The Locator Attribute. The Arcrole Semantic Attribute. The Role Semantic Attribute. The Title Semantic Attribute. The Show Behavior Attribute. The Actuate Behavior Attribute. The Label Traversal Attribute. The From Traversal Attribute. The To Traversal Attribute.