What strikes me is that we all discuss ToCs as if they were "a thing"....

Talking about a "logframe" is easy: there is standard format to it. 

It might be slightly adapted, but it is quite clear what it is, how it looks like, how it works.

The same is not true for ToCs.  What a ToC is can be vastly different.

I feel we might all use the same word, but having something vastly different in mind...

Best

Silva