I usually double click any of my pieces. That removes all arrows from the board (as long as it's not my turn)
What the?? Arrowtose

It really suck that people abuse tools for the game and ruin things for others. bed nice if they could just be banned and an email sent to their mothers.

@EmpireCityRay, well, that guy said you "Hi" this creative way. He just did not expect that you'll see a mirrored version of his drawing: "iH"
@TheOriginalSoni, it is more safe to left click outside the board (somewhere near your name, for example) to remove the arrows. This way you'll not make an accidental wrong move.

@RG-2HI4U Word, it does suck that someone takes a tool meant for some other purpose for idiotic joyride.
@BabYagun & @MGleason No but he/she continued throughout the game writing OK or drawing bits of art on the chessboard while I was attempting to scan the entire chessboard. Huge misuse of the intentions of arrows, SMH

I just had a "teammate" (@Pichooo) who drew so many arrows (most of whom were frivolous in a smart move) that I couldn't even focus or see under ALL of the lines. he kept doing it, even I asked politely he continued repeatedly. Can't wait until arrows are disabled sometime next week because there is a huge misuse of the intent denote moves with it!!!
So there's comatose and then there's "arrowtose" lol. I have partners misuse then inoperative arrows one wrote out OK on the entire board then proceeded to draw all over the place, this was one of his early works. Freakin' Rembrandt here, SMH LOL