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==Processing instruction constructors==



   
  <!-- start source code -->
   
    <source lang="xml">

File: Data.xml

File: Query.xquery
<ul>{
  <?doc-processor version="4.3"?>,
  processing-instruction doc-processor2 {"version="4.3""},
  processing-instruction {concat("doc-processor", "3")}
        {concat("version="", "4.3", """)}
}</ul>
Output:
<?xml version="1.0" encoding="UTF-8"?>
<ul><?doc-processor version="4.3"?><?doc-processor2 version="4.3"?><?doc-processor3 version="4.3"?></ul>
 </source>