Hi John,
https://www.ibm.com/docs/en/ermd/9.7.2?topic=function-extending-doors-dxl
is a good starting point and should allow you to get started. Come back with more questions any time or feel free to open a support case in your IBM Software Support portal. :-)
best regards,
Sven.
Disclaimer: While I work for IBM DOORS product support, all views and opinions expressed here, are my own. Contact IBM for official assistance.
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