Here explains how to create a documentation page for a custom HDA: https://www.sidefx.com/docs/houdini/help/nodes.html [www.sidefx.com]

But I wonder if it possible to create a page (with Houdini markup language) that is not related to a HDA? For example, if I have 5 HDAs that are all related to generate a procedural animatable robot, and I'd like to write the documentation explaining the whole workflow, what's the best way to do that?

As an example, the official documentation has many pages that are not directly related to one single node, like: Working with the skeletons [www.sidefx.com]. I'd like to make something like that.