adam@1: datatype readiness a = Ready of a | Waiting | Invalid of string
adam@1: datatype rpcResult a = Success of a | Failure of string
adam@1: 
adam@1: val warning : a ::: Type -> signal (readiness a) -> xbody
kkallio@9: 
kkallio@9: val warningFmt : a ::: Type -> ctx ::: {Unit} -> [ctx ~ body] 
kkallio@9:     => (string -> xml (ctx ++ body) [] []) -> signal (readiness a) 
kkallio@9:     -> xml (ctx ++ body) [] []
kkallio@9: (* A version of warning that adds a chrome wrapper to the warning message. *)