By creating ad-hoc diagrams
Wouldn’t it be great if there was a way to create a document by just dropping any element from anywhere in the model into your document? You could do this by creating a new eaDocX section in the document for each element or package you need, but that would quickly get unmanageable. (Incidentally, our documents seem typically to have 3 to 8 sections, including document information and glossary sections.)
There is one more eaDocX trick to create the perfect document.
Create a new diagram somewhere in your model. We generally use a separate part of the model for this, called something like ‘Ad-Hoc Diagrams’. Then drag & drop the elements & packages you want to document into this diagram. Add your diagram, or the package which contains it, into an eaDocX section in your document, and configure the diagram to print in ‘Contents, no diagram’ style. This tells eaDocX that it’s not the diagram you want to print, just the contents of it.
For example, in the EA Package Browser shown here: