I think it is the scribble pad. You use the mouse (or Pen mouse) to write
things. If you mouse draw something that looks like an "E" then the cell
value evaluates the sketch to an "E"
I think it is the scribble pad. You use the mouse (or Pen mouse) to write
things. If you mouse draw something that looks like an "E" then the cell
value evaluates the sketch to an "E"