Icon class icon_class fas fa-quote-left icon_class_computed fas fa-quote-left Related content Source OMG Systems Modeling Language (SysML) 1.6 Copyright information About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes Snippet kind NOTATION UML keywords Message MessageEnd lost Message Previous snippet Full quote A lost Message is denoted with a small black circle at the arrow end of the Message. Next snippet Related snippets 17.4.4.1 Message - A message is shown as a line from the sender MessageEnd to the receiver MessageEnd. The line must be such that every line fragment is either horizontal or downwards when traversed from send event to receive event. The form of the line or arrowhead reflects properties of the message Related snippets (backlinks) Visit also Visit also (backlinks) Flags