How can I draw perfect, recursive arrow in Omnigraffle? I'm looking for a cleaner method than the one below.
You can make one with a circle and a no-stroke line. Let's start with the object that the arrow should be connected to:
Now draw a circle next to the object:
Now add a line (magnetized to the starting object) with an arrowhead at the start. Draw the line out until the angle of the arrowhead is about right. We're eyeballing it here.
Now change the stroke style to "No Stroke":
And you've got a recursive transition arrow!