I've search high and low, as I'm sure you have too, and cannot find any documentation related to visitor: not in other tests. Perhaps your Target consultant can provide a definition.

John - This is also my understanding. Løjmann is correct: it doesn't matter if it's the control or one of the test variants -- they would still be considered entrants from another test.- Brion

Hello,My name is Brion. I'm a Software Engineer/UI Dev at IHG, working with the Testing & Optimization program.I look forward to learning from, and sharing with others in the community.Thanks!