Figure ll.i  Bir lary Tree Structure  Root  program Traversal (Input, Out  ,t);  { Program 11.6 - Illustra G  binary tree traversal.  }  type  Ptr  =  iNode;  Node  =  record  var  Info:  Char;  LLink,  RLink:  Ptr  end;  Root:  ptr;  Ch:  Char;  118  Pascal User Manual 