digraph world {

System -> output:po;
System -> output:sso;



System -> database[label="database\n interface\n \n "];
database -> System;
User ->input:m;     
User -> input:i;    
User ->  input:n;   


brain -> User;
brain[shape="rectangle",style="rounded"];
database[shape="rectangle",style="rounded"]

output:pi -> User;
output:ssi -> User;
User -> brain;

output [shape=record, label="{{<po>| printer | <pi>} | { <sso>|screen|<ssi> } }"]
input [shape=record, label="{{<p>  |keyboard| <n> } |{<so> |screen | <m>}| {<mo>| mouse|<i> } }"]
//empty [shape=record, label="\n \n \n  |  | \n\n\n", color = red]
//key[label = " "]

input:p  -> System;
input:so -> System;
input:mo -> System;



}

digraph world {
//orientation=landscape;

subgraph  clusterRepli {
{rank=same;   name }  //---------------------------
    name      [color=white,  label="Replications schema (17.04.2009) "];
    name ->B [styled=dashed, dir=back, color=white];
{rank=same; B;  KGB; }  
    B [label="", color=white];
    KGB [label="California + KGB"];
     B-> KGB [  color=white];
{rank=same;   NewYork; BE9; BE11;  BE10; foo } 
    BE9 -> NewYork [color=white];
    KGB -> NewYork[label=" LAN"];
    B -> BE9[  label="0.2G bytes/day", color=white];
    BE9  -> BE11[label=" LAN", style=dotted];
    BE10 -> BE11[label=" LAN"];     
    BE11 -> BE10[stype=bold, color=green];
    BE9->LasVegas [label="5G bytes/day",color=white];
    foo [color=white, label=""];
    BE10-> foo [color=white]

{rank=same;   LasVegas; Intel2 ; foo1; /*bavarian*/ }  
   BE11 -> LasVegas;
   BE11 -> LasVegas[ style=dotted];
   BE10 -> LasVegas[stype=bold, color=green];
//   BE10 -> bavarian[styled=dashed, dir=back];
//   bavarian -> LasVegas[styled=dashed, dir=back];
   BE10 -> foo1 [label="    "];
   Intel2[ label=bavarian];
   BE10 -> Intel2 [styled=dotted, dir=back, color=blue];
   Intel2-> LasVegas[styled=dotted, dir=back, color=blue];

   Intel2 -> foo1 [color=white];
   foo1[label="Intel2"];
   foo->foo1[color=white,label="1.5G bytes/day"];
}
}