Console      :  Encoding  :           I / O  facilities ++

       (Standard-Streams)        :  (Reader, Writer, etc.pp.)
                    :            :
       System.err -<-[ encoding ]--[PrintWriter]---- < -- err
                    :            :
       System.in -->-[ encoding ]--[BufferedReader]-- > -- in
                    :         :..............................
                    : 
       System.out -<-[ enc.]----[ Thread ]--------- > -- out2 
                    :       :                 /    Alternative
       .....................                 /   graph. Display
                          :                 /
       out               :                 /     TeeWrtiter
       -- > -[PrintWriter]---[ Buffer ]---/      outTW
                       :   |
       ..................  \------------<--------\    ........
                                                  |
        out1 -- < ----X-[ Thread ]----------- > ---
                                       /      Output to out
                                      /
                                     /    TeeWrtiter
       log                          /     logTW
       -- > ------[ Buffer ]-------/ 

     AppIO's I / O structure 
     (as ugly pseudo graphic for .png hostile browsers)