@startuml scale 2.0 left to right direction skinparam packageStyle rectangle skinparam backgroundColor #FFF skinparam shadowing false skinparam classFontColor black skinparam rectangle { BackgroundColor white BorderColor black } skinparam usecase { BackgroundColor white BorderColor black ArrowColor black } skinparam actor { BackgroundColor white BorderColor black } actor user rectangle "use case" as us { user --> us: input (storage) .> (process) (process) .> (storage) us --> user: output } @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