On this diagram note that the cardinalities "0..inf" are shown close to Position and the crowfeet (correct).
Uncomment "skinparam LineType ortho" and the cardinalities are swapped: "0..inf" are shown close to Person / Organization (wrong).
Note: I implemented extended arrowtypes and headlabel/taillabel in graphviz originally, and I always got confused: tail is source (start) and head is target (end)