A room in fiction could include anything. Doesn’t have to exist, could be imaginary and would look more like fantasy.
A room in non-fiction could include things that exist in real life. Can’t be imaginary since It would look more realistic.
M E T O O I A M D O I N G
In chapter 2 of the Lightening Thief, Percy sees 3 old ladies knitting a sock and one cuts a string looking in his direction which symbolizes Percy's lifeline is in danger. The ladies know he is a demigod in danger, and the mist keeps him from knowing this. The mist conceals magic. Later as the book goes on strange events lead to a realization that he is a demigod.
Answer:
The audiences location
Explanation: If they are in a different location from the presenter then it is an online presentation.