Indeed, while these guidelines were incubated in a member-run science fiction convention, I hope they spread to any public event. Blue squares are particularly welcoming at small meetings, such as eight chairs in a circle. It’s challenging enough to sit next to a stranger in an unfamiliar context: it’s a pleasant change when the first interaction need not be “would you make room for me to be here?”
Say it! I need to balance the direction my neck’s happy with the direction my vision works the best.