UML14 — action state symbol/state symbol difficult to distinguish when drawn by ha

Summary: Summary: The action state symbol and the state symbol differ only in the convexity of their vertical sides. Therefore, it is difficult to distinguish between them, if the diagram is drawn by hand. The symbols have different semantics and both of them can appear in a single diagram (activity diagram). Therefore, it is necessary to clearly distinguish between the symbol for the state and the symbol for the action state.

Previously considered for 1.4 and closed w.o. change