Filter ->
Arg Dest, Src : String 
    In : < &Arg, String >, Out : < String, Arg >
    FilterCondition, PrintCondition, StopCondition : < Arg > : < 1 | 0 >    

Break, Out = 0 ..

Do while !Break
 - In >A< Src

 If FilterCondition A then
  If PrintCondition A then Out = 1
  Else _
 Else
  If StopCondition A then Break = 1
  Else _
 ;

 If Out then
  - Out Dest A
 ;
;

/