---------------------------MUST-READ-------------------------------- To see the 3D object you drew, you need to go cross-eyed until the two copies of what you drew meet. "R" to restart. Depth means how far away you want to see the object you draw. Also, don't draw fast, it will mess up the copy of your drawing. I might add color, but when I try to, it hasn't been working. Space will change the pen to an eraser, and space will change it to pen.