<coderef>
The <coderef> element references an external file that contains
         literal code. When evaluated, the <coderef> element causes the target code to be displayed inline. If the target
         contains non-XML characters such as '<' or '&', those will need to be handled in a
         way
         that they can be displayed correctly by the final rendering
         engine. This element
            is part of the DITA programming domain, a special set of DITA elements
            designed to document programming tasks, concepts, and reference information.
      Content models
See appendix for information about this element in OASIS document type shells.
Inheritance
+ topic/xref pr-d/coderef
Example
<example> <title>Processing DITA</title> <p>This code is an example of how to process DITA.</p> <codeblock><coderef href="process-dita.xsl"/></codeblock> </example>
Attributes
The following attributes are available on this element: Universal attribute group, Link relationship attribute group, @outputclass, and @keyref.