XSLT Preferences
To configure the XSLT options, open the Preferences dialog box and go to .
The XSLT preferences page allows you to customize options for the default XSLT validation
      engines. You can also specify the engine directly in a validation scenario.
    Note: 
If no specific engine
        is specified in the validation scenario and the XSLT file has a transformation scenario
        associated, Oxygen XML Author Eclipse plugin will use the engine specified in the transformation
        scenario.
The following options are available in this page:
  