MFreec2pWindow [Firstc2pWindow.w[,Lastc2pWindow.w]] ; Free a c2pWindow, range of c2pWindows or all c2pWindows

Allows you to free a specific, all, or a range of c2pWindow objects. As c2pWindow
objects do not contain any graphics-data, this will simply kill the object
definition. If you omit the parameters it will free all objects regardless.
If you specify a second parameter it will free a range of objects (and will
error-check that they exist first).