@startuml !include https://raw.githubusercontent.com/kirchsth/C4-PlantUML/extended/C4_Dynamic.puml Boundary(a, 'Direction ""Rel""'){ Rel_Down( Rel_Down, X, "") Rel_Up( Rel_Up, X, "") Rel_Right(Rel_Right, X, "") Rel_Left( Rel_Left, X, "") } Boundary(b, 'Direction ""Rel"" Shorthand'){ Rel_D(Rel_D, Y, "") Rel_U(Rel_U, Y, "") Rel_R(Rel_R, Y, "") Rel_L(Rel_L, Y, "") } Boundary(c, 'Plain ""Rel"" and ""BiRel""'){ Rel(Rel, Z, "") BiRel(Birel, Z, "") } @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