Add a button for mDraw in order to move the pen/laser to the corner of the loaded svg picture.
It should be useful for people to get the idea for the size and location of the drawing/emboss image.
(double clicks to move the arm can only get a very rough idea where the picture is going to be printed. It is not useful if what the user wanted to print/emboss is very small, and required to be printed at a very accurate location.)