( Initializes the readln subsystem ) : RDLN$ ( 57 == rdln's memory ) H@ 0x57 RAM+ ! ( 2 for IN>, plus 2 for extra bytes after buffer: 1 for the last typed 0x0a and one for the following NULL. ) INBUFSZ 4 + ALLOT (infl) ['] RDLN< 0x0c RAM+ ! 1 0x06 RAM+ ! ( 06 == C