old_contents: 
  var parsec = require( '..' );
  
  var instruction;
  
  instruction = parsec.choice(
      parsec.char( '>' ),
      parsec.char( '<' ),
      parsec.char( '+' ),
      parsec.char( '-' ),
      parsec.char( '.' ),
      parsec.char( ',' ),
      parsec.between(
          parsec.char( '[' ), parsec.char( ']' ),
          parsec.many( function()
          {
              return instruction.apply( this, arguments );
          } )
      )
  );
  
  var bf = parsec.many( instruction );
  
  console.log( parsec.run( bf, '+--.>++[-<]' ) );
  
new_contents: 
  var parsec = require( '..' );
  
  var instruction, bf,
      HELLO = '++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.';
  
  instruction = parsec.choice(
      parsec.char( '>' ),
      parsec.char( '<' ),
      parsec.char( '+' ),
      parsec.char( '-' ),
      parsec.char( '.' ),
      parsec.char( ',' ),
      parsec.between(
          parsec.char( '[' ), parsec.char( ']' ),
          parsec.many( function()
          {
              return instruction.apply( this, arguments );
          } )
      )
  );
  
  bf = parsec.many( instruction );
  
  console.log( parsec.run( bf, HELLO ) );
  
subject: Update the Brainfuck example.