Font To know fonts available on your system, you may use the following special syntax: @startuml listfonts @enduml You can also add an optional sentence to be displayed: @startuml listfonts 私は申し訳ありません:私は日本語を話さない。 @enduml Examples Those fontname can be used in any UML diagrams. @startuml skinparam defaultFontName Segoe UI Room *-- Chair : "1" has "several" @enduml @startuml skinparam defaultFontName VL Gothic 部屋 *-- 椅子 : "1" 持っています "いくつか" @enduml You can also change font using link::skinparam[skinparam command].