[Yanel-dev] Explaining a usecase

[Michael Wechner]

Hi

I have recently re-read the following documentation

http://www.yanel.org/en/documentation/executable-usecase-resource.html

and I think it's not clear what a usecase actually is and what it the 
difference between UsecaseResource and ExecutableUsecaseResource?

And feedback would be very welcome such that I can enhance this 
documentation.

Thanks

Michi