You can "bend" links in a view to prevent them from crossing over other view objects. Bending a link adds tackpoints to it. Tackpoints are small black squares at the point where a link bends. They are visible only when the link is selected.
To bend a link, click any point on the link and pull the link in the desired direction with the mouse.
You can select an existing tackpoint on a link and move it to another location. This prevents another tackpoint from being created. You can also delete a tackpoint by selecting it and using the Delete function.