ported example from pretty-big to racket/gui (Why? sgl is in mr dist, pretty-big is in plt dist)
ported example from pretty-big to racket/gui
(Why? sgl is in mr dist, pretty-big is in plt dist)

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket