When in Sketching Mode, and in the general selection state, once you have selected any edges, Cut and Copy appear in the context menu. If you choose one of these, it is just as though you changed to the Modify group (if necessary), and selected either Cut or Copy in the toolbox, with the preselected edges. At that point you are asked to indicate the Paste Handle, and then automatically taken to the Paste function to place the edges, at as many locations as you want. When you are finished with Paste, along with the End option in the context menu, Cut and Copy now appear here also providing shortcuts back to those functions. Also, in the Cut and Copy functions themselves, any of the End right mouse button options will take you automatically to the Paste function.