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Guideline (Beginner,Layout) Use the conventional Actors’ boundaries (circles) unless other shapes such as rectangles can improve models' layout. Open Version
Discussion: The conventional Actors’ boundaries are circles. In some instances other boundary shapes such as squares or rectangles can improve the management of the drawing space and therefore can enhance the readability and organization of the layout of the model. These non-conventional shapes, however, need to be used consistently.
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