Determining the version of the DITA Open Toolkit
You can use the command-line tool to determine the version of the DITA-OT.
Run the startcmd file that is applicable for your operating system.
The startcmd.bat and startcmd.sh files are in the directory where you installed the DITA-OT.
From the command prompt, issue the following command:
java -jar lib/dost.jar -version