@startuml <style> sequenceDiagram { reference { RoundCorner 20 FontName SansSerif HyperLinkColor blue FontColor green FontSize 14 FontStyle plain HorizontalAlignment center DiagonalCorner 5 LineThickness 2 LineColor #A80036 BackGroundColor palegreen Shadowing 1 } } </style> ref over Alice, Bob : this is a reference\n over Alice and Bob ref#7700FF over Alice, Bob : this is a reference over Alice and Bob @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