<doc>
  <legacy_id>1274</legacy_id>
  <name>extendKey</name>
  <type>property</type>
  <syntax>
    <example>set the extendKey to <i>keyNumber</i></example>
  </syntax>
  <library></library>
  <objects>
    <global/>
  </objects>
  <synonyms>
  </synonyms>
  <classification>
    <category>User Interaction</category>
  </classification>
  <references>
    <function tag="numToChar">numToChar Function</function>
    <function tag="charToNum">charToNum Function</function>
    <message tag="keyDown">keyDown Message</message>
  </references>
  <history>
    <introduced version="1.0">Added.</introduced>
  </history>
  <platforms>
    <linux/>
  </platforms>
  <classes>
    <desktop/>
    <server/>
    <web/>
  </classes>
  <security>
  </security>
  <summary>Specifies the key used to create special (extended <glossary tag="ASCII">ASCII</glossary>) characters on <glossary tag="Unix">Unix systems</glossary>.</summary>
  <examples>
    <example>set the extendKey to 6 <code><i>-- disables entry of high-bit chars</i></code></example>
  </examples>
  <description>
    <p>Use the <b>extendKey</b> <glossary tag="property">property</glossary> to specify how to create special characters, or to prevent users from typing special characters.</p><p/><p><b>Value:</b></p><p>The <b>extendKey</b> is a positive <keyword tag="integer">integer</keyword>.</p><p/><p>By default, the <b>extendKey</b> is set to 5, so the <glossary tag="modifier key">modifier key</glossary> is the mod5 key specified by the "xmodmap" program on your computer.</p><p/><p><b>Comments:</b></p><p>The <b>extendKey</b> specifies the <glossary tag="modifier key">modifier key</glossary> used to toggle the high <glossary tag="bit">bit</glossary> of <keyword tag="characters">characters</keyword> on and off. Use the "xmodmap" program to find out which key is used for mod5 (or the <glossary tag="modifier key">modifier key</glossary> specified for the <b>extendKey</b>).</p><p/><p>To enter a high-bit character, press the modifier key, then type the key that corresponds to that character, then press the modifier key again to return to entering regular ASCII characters.</p><p/><p>If the <b>extendKey</b> is greater than 5, entry of high-bit <keyword tag="characters">characters</keyword> is disabled.</p><p/><p>The setting of this property has no effect on Mac OS and Windows systems.</p>
  </description>
</doc>