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Using an External DITA Open Toolkit in Oxygen XML Author Eclipse plugin

Oxygen XML Author Eclipse plugin comes bundled with a DITA Open Toolkit, located in the DITA-OT-DIR directory. If you want to use an external DITA-OT for all transformations and validations, you can open the Preferences dialog box and go to the DITA page, where you can specify the DITA-OT to be used.