m = Morph.makeRectangle(0,0, 50,50) this.addMorph(m) m.moveBy(pt(50,50)) m.rotateBy(4) m.setFill(Color.rgb(100,200,0)) m.remove()

Debugger Bug 1. select all code in workspace 2. press CMD+SHIFT + D to debug workspace 3. press step over it