Situation: I am sitting on a chair while there is another chair with a box on it on my right.
Alternative situations: I am sitting on a chair, there is a box on top of a chair to my right side, while I am sitting I am daydreaming about my vacation to germany. I got up from a plastic chair because I had to distribute the material I recovered from the box on my right to my colleagues sitting around the large table in front of me.
Question: Which direction should I go if I want to write on a blackboard?