method description screen onkeypress(funkey=nonebind fun to key-press event of key if key is givenor to any key-press-event if no key is given argumentsfun function with no arguments key stringkey ( " "or key-symbol ( "space"in order to be able to register key-eventsturtlescreen must have focus (see method listen example (for turtlescreen instance named screen and turtle instance named turtle)def ()turtle fd( screen onkey( "up"screen listen(##subsequently the turtle can be moved by ##repeatedly pressing the up-arrow key##or by keeping pressed the up-arrow key ##consequently drawing hexagon screen ontimer(funt= install timerwhich calls fun after milliseconds argumentsfun function with no arguments number > example (for turtlescreen instance named screen)running true def ()if runningturtle fd( turtle lt( screen ontimer( (##makes the turtle marching around running false this copy belongs to 'acha