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In cases where a set of WebHelp Classic pages need to be updated on a regular basis to deliver the latest version of the documentation, the WebHelp pages should always be requested from the server upon re-loading it in a Web browser on the client side, rather than re-using an outdated cached version in the browser.

To disable caching in WebHelp Classic output, follow this procedure:
  1. Edit the following XSL file for DITA or DocBook WebHelp systems:
    • For DITA WebHelp systems, edit the following file: DITA-OT-DIR\plugins\com.oxygenxml.webhelp.classic\xsl\createMainFiles.xsl.
    • For DocBook WebHelp system, edit the following file: [OXYGEN_INSTALL_DIR]\frameworks\docbook\xsl\com.oxygenxml.webhelp.classic\xsl\createMainFiles.xsl.
  2. Locate the following template in the XSL file: <xsl:template name-"create-toc-common-file"> and add the following code snippet:
    <meta http-equiv="Pragma" content="no-cache" />
    <meta http-equiv="Expires" content="-1" />
    Note: The code should look like this:
          <xsl:if test="$withFrames">         
          <base target="contentwin"/>
          <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
               <!-- Disable caching of WebHelp pages in web browser. -->      
          <meta http-equiv="Pragma" content="no-cache" />
          <meta http-equiv="Expires" content="-1" />
  3. Save your changes to the file.
  4. Re-run your WebHelp transformation scenario.