Great program but, the mouse setting for tear off of the toolbar is very strange and honestly makes it difficult to use on a laptop. What I am talking about is the fact that you have to click and hold to access the smaller "sub-toolarbars" that will be necessery to do if you are drawing mechanisms. It is easier when using a mouse rather than a mouse pad, but it still makes no sense and it would be much easier in both cases if you just had the sub-toolbar show up and hide upon one click (no hold). It would be great if this is changed, because it does pretty heavily impact the user experience when using the program in that everything takes a little longer, especially when on a laptop with no mouse.