I've created a small site using existing modules, so I understand a bit about placement.info as talked about
When I made my first custom module following
the tutorial, I was surprised to find its full view rendered on all screens. Eventually I figured out to do DisplayType="Detail" to filter the display to just the full page.
But now I have to confess that I have no idea where Display Types are defined for Content Types. A Blog Post has "summary" and "details" amongst other things, but where is this defined? It's not in the content type screen. Page also seems
to have "details" but does it have "summary?"
Are Display Types extendable or is there a set list somewhere (based on everything else I think I know the answer, but I can't figure out where they are defined)?
Where does the Display Type get initiated from? For example on one screen a blog post uses a summary view, but then on another it's a detail view. I see some code in the Controller talking about summary but nothing about detail.
I'd appreciate some insight. Thanks.