What is the notation for a send signal action?

What is the notation for a send signal action?

• A. Convex pentagon shaped like a signpost.
• B. Round-angle with name string.
• C. Concave pentagon that looks like a rectangle with a triangular notch cut out on one side.
• D. A dashed line with an open arrowhead.

Answer: (A)

Notating a send signal action uses a convex pentagon that looks like a signpost. This shape is chosen to stand out and indicate that a signal is being sent to another part of the system, rather than just performing an ordinary action. It’s visually distinct from a standard action symbol (often a rounded rectangle with a label) and from other pentagon shapes that denote different constructs. A dashed line with an open arrowhead, on the other hand, represents the path of the signal or the flow of communication, not the action itself, so it isn’t the symbol for the action.

Notating a send signal action uses a convex pentagon that looks like a signpost. This shape is chosen to stand out and indicate that a signal is being sent to another part of the system, rather than just performing an ordinary action. It’s visually distinct from a standard action symbol (often a rounded rectangle with a label) and from other pentagon shapes that denote different constructs. A dashed line with an open arrowhead, on the other hand, represents the path of the signal or the flow of communication, not the action itself, so it isn’t the symbol for the action.