Please confirm that you have searched existing issues in the repo

Yes, I have searched the existing issues

Any related issues?

No response

What is the area that this feature belongs to?

No response

Is your feature request related to a problem? Please describe.

The content processing flow was updated in the huge V3 release (#1403). While the devdoc does provide a high-level idea of the content processing flow, I think it would be good to have some basic examples to illustrate the flow more concretely.

Describe the solution you'd like

Maybe one example could be a simple markbind project such as the template, and another could be more advanced that covers some edge cases.

It doesn't have to be super low-level, but it should at least cover, given a source file (index.md), what are the key transformations at each step of the content processing flow (nunjucks -> markdown -> html).

Describe alternatives you've considered

NA

Additional context

NA