Finally got it, thanks! I think my problem was that I didn't click on the part to select it, and without that the rotate cursor doesn't appear. Once I left clicked on the jumper to select it and moved the cursor to the edge of the dotted line enclosing rectangle down where it curves around the pad (but not on the straight section!) indeed the cursor changes to the rotate arrow and I can extend or rotate the jumper. This is exactly what the OP wants to do! Learned another new thing about Fritzing!
Peter
