genaral:use the make/play variable to change if you are making or playing. Editor mode:you can draw levels with your pen. change the pen type by pressing the left and right arrows. change the pen size by pressing up and down arrows. play mode: left and right arrows to move left and right. space bar to jump.
i used this platformer tutorial | | V https://www.youtube.com/watch?v=lAbxIMyIP0I&t=711s