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hold [spacebar] and move the cursor to select a color

press [e] to pick a color from the image

hold [q] and move the cursor to alter the circle's diameter

hold [w] and move the cursor to alter the circle's opacity

the sliders to the left and right manipulate diameter and opacity respectively

hold [f] and move the cursor left or right to rotate the image

hold [a] to pan the image

press [r] to reset the position and rotation of the image

type a message to your partner in the bar below

hold [~] to view the conversation log

press tab to change the background color

press [shift] to toggle click-to-drag

press the [down arrow] to save the image

refresh the window and try again if you don't like your partner


: )