@startuml !include <C4/C4_Sequence> !$response = "-->" AddRelTag("response", $textColor=$ARROW_COLOR, $lineColor=#red, $lineStyle=DashedLine()) System(c4stdlib, C4Version()) Container(a1, "a1") Container(a2, "a2") Rel(a1, a2, "request") ' legend not working legend Rel(a2, a1, "response", $rel = $response) Rel(a1, a2, "request2", $rel = $response) ' with working legend Rel(a2, a1, "response2", $tags="response", $rel = $response) SHOW_LEGEND() @enduml Submit amiga aws-orange black-knight bluegray blueprint cerulean-outline cerulean crt-amber crt-green cyborg-outline cyborg hacker lightgray mars materia-outline materia metal mimeograph minty plain reddress-darkblue reddress-darkgreen reddress-darkorange reddress-darkred reddress-lightblue reddress-lightgreen reddress-lightorange reddress-lightred sandstone silver sketchy-outline sketchy spacelab spacelab-white superhero-outline superhero toy united vibrant       🎉 Discover the future PlantUML Web Editor! 🚀  PNG  SVG  ASCII Art