[Robin Wragg]

I am trying to create some objects and this should be easily done using two stencils with a trim function. However I cannot see a Trim Function in Omnigraffle. For example, if I want a rectangle with an semi-circular end, then how can I use the rectangle and circle stencils, set their sizes, bring them together and then trim off the appropriate end of the rectangle and half of the circle, then I would group as the desired object? Comments appreciated.