I am trying to extend a framework ( Options -> Preferences -> Document Type Association , select a framework, then Extend ). This is on Oxygen XML 18.1. What I am observing is that it is not possible to extend a framework that is already an extension of another framework. Is this a known limitation?...

Thanks Radu for your long answer. I'll take a look at the options. Specifically the last one (catalog override) looks interesting. I guess the challenge would be how to not lose the original dita schematron checks while overriding them in the catalog. That could be tricky. I have one more short foll...

I guess another way to ask this question is whether there is any way to "inject" scenarios into frameworks that I don't control (but without creating extensions for every one of those frameworks).

- Wolfgang

I am looking for a way to have more than one frameworks apply to the same source file. Here is my scenario. I am currently working with OxygenXML 18.1. We have a framework that operates on our own specialized DITA flavor. It is extended from the standard DITA framework that comes with Oxygen. We als...