Situation: I am standing and facing the curtain to open it and on my right side is the door.
Alternative situations: I am closing the curtain in front of me to cover the windows on the right side in front of me cause the sun is too shiny. I want to draw the curtain on the left side of the glass door to allow more light into the rom.
Question: I am having 5 guests for dinner, how many more plates do I need to set out on the table behind me?