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An editor variable can be created and included in any user-defined expression where a built-in editor variable is also allowed. For example, a custom editor variable may be necessary for configuring the command line of an external tool, the working directory of a custom validator, the command line of a custom XSLT engine, or a custom FO processor.

You can create or configure custom editor variables in the Custom Editor Variables preferences page. To create a custom editor variable, follow these steps:
  1. Open the Preferences dialog box and go to Custom Editor Variables.
  2. Click the New button at the bottom of the table.
  3. Use the subsequent dialog box to specify the Name, Value, and Description for the new editor variable.
  4. Click OK to save your configuration.