Sys
type DCMVar a
type Handle
hPutChar
hPutCharP
hPutStr
hPutStrP
hPutStrLn
hPutStrLnP
hGetChar
hGetCharP
hGetLine
hGetLineP
hSetBuffering
hSetBufferingP
hClose
hCloseP
fatal
catchFatal
guardAlloc_Check
guardWrite_Check
guardAllocP_Check
guardWriteP_Check