I have created a custom section, a custom tree and a "edit" page that displays some details. I now need to move on and allow the page to update data.

I decided that I would first add 2 tabs so that I could organise the page a bit better ... however, I am struggling to find out how I actually do that!

I have seen quite a few tutorials for creating simple stuff (which is pretty much how I got to where I am now!), but I can't find anything particularly detailed.

So - is there any detailed documentation anywhere? Or, is there a tutorial that explains how to add Tabs to an edit page? Also, is the page structure documented anywhere (e.g. umb-panel, umb-tab-view, etc, etc).