=== TEI: Elements for pointers and links ===

* <ptr> (pointer) defines a pointer to another location.
  * Examples:
    * <p>This is discussed in <ptr target="#TEILite"/>.</p>
    * <p>This is discussed in <ptr target="http://www.tei-c.org/TEI/Guidelines/SA.html"/></p>
    * <p>This is discussed in <ptr target="http://mpdl.mpiwg-berlin.mpg.de/music/ramones/ramones_2004.xml#xpointer((id('page6'))/></p>
    * A pointer named "myId1" to "myId2" is here <ptr xml:id="myId1" target="#myId2"/>

* <ref> (reference) defines a reference to another location, possibly modified by additional text or comment.
    * <p>This is discussed in <ref target="#TEIGuide">The TEI Guidelines</ref>.</p>
    * <p>This is discussed in <ref target="http://www.tei-c.org/TEI/Guidelines/SA.html">the chapter on linking</ref></p>
    * <p>This is discussed in <ref target="http://mpdl.mpiwg-berlin.mpg.de/music/ramones/ramones_2004.xml#xpointer((id('page6'))>Dick Porter: Ramones – The Complete Twisted History, London: Plexus, 2004. Page 6. ISBN 0859653269</ref></p>

* <link> defines an association or hypertextual link among elements or passages, of some type not more precisely specifiable by other elements (also possible between different documents)
  * Example:
  <note id="n3.284" type="imitation" place="foot" anchored="no">    
    <ref id="r3.284" rend="sc">...</ref>
  </note>
  <link targType="ref l" targOrder="Y" targets="r3.284 l3.284"/>

* <linkGrp> Link groups
  * Example:
  <linkGrp type="imitation" targType="note l" targOrder="Y">
    <link targets="n2.79 l2.79"/>
    <link targets="n2.88 l2.88"/>
    <!-- ... -->
    <link targets="n3.284 l3.284"/>
    <!-- ... -->
  </linkGrp>

* <anchor> specifies a location or point within a document so that it may be pointed to.
* <seg> identifies a span or segment of text within a document so that it may be pointed to.