gf-core/examples/tutorial/hello/HelloFin.gf

concrete HelloFin of Hello = {

  lincat Greeting, Recipient = {s : Str} ;

  lin 
    Hello rec = {s = "terve" ++ rec.s} ;
    World = {s = "maailma"} ;
    Mum = {s = "äiti"} ;
    Friends = {s = "ystävät"} ;
}