Board Thread:Support Requests - Getting Technical/@comment-16461120-20170216044337/@comment-168424-20170217184628

Includeonly works, but it makes it harder to see how your template works on a template page when it is not being transcluded somewhere else.

I prefer this: Explanation of how to use the template that's not part of the code here.

Actual template code here with demonstration placeholder data in stuff as an examples. More template code. Stuff outside doesn't really matter...

Template types are lightly documented at: Help:Template types

I explained the various include tags somewhere, but I have to dig up a link.