Hi: Those were concept drawings. In the finalized version, all of the panels & tabs are removable. There is a "+" in the tool bar that will let you add / rem

Hi: Those were concept drawings. In the finalized version, all of the panels & tabs are removable. There is a "+" in the tool bar that will let you add / remove any button, menu, panel entry. This is in the 4.0 branch that we are working on.