Situation: I am sitting on a long bench with a TV directly behind me.
Alternative situations: I am sitting on a bench and waiting for my boss to come, reading a message he left on a whiteboard in my two o'clock direction, while there is another bench in front of me. I am sitting on the bench with half my butt cheeks off the bench and reading the writing on the whiteboard to my right in front of me.
Question: I want to write on a whiteboard, how many do I have to choose from?