@startuml participant A participant B participant C A->Data: Mod 1 A->ZTC: Do ZTC->Calc: call # for A Calc->Data: Get Data->Calc: Response Activate Calc B->Data: Mod 2 B->ZTC: Do C->Data: Mod 3 C->ZTC: Do Calc->ZTC: Response Deactivate Calc ZTC->A: Response ZTC->Calc: call # for B and C Calc->Data: Get Data->Calc: Response Activate Calc Calc->ZTC: Response Deactivate Calc ZTC->B: Response ZTC->C: Response @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