xlink:simple 

Intended for use as the type of user-declared elements to make them simple links.

Complex Type Information

Model

ANY element from ANY namespace

Attributes

QName Type Fixed Default Use Inheritable Annotation
xlink:actuate xlink:actuateType optional
xlink:arcrole xlink:arcroleType optional
xlink:href xlink:hrefType optional
xlink:role xlink:roleType optional
xlink:show xlink:showType optional
xlink:title xlink:titleAttrType optional
xlink:type xlink:typeType simple optional

Source 

<xs:complexType mixed="true" name="simple">
  <xs:annotation>
    <xs:documentation>Intended for use as the type of user-declared elements to make them simple links.</xs:documentation>
  </xs:annotation>
  <xs:group ref="xlink:simpleModel"/>
  <xs:attributeGroup ref="xlink:simpleAttrs"/>
</xs:complexType>