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  1. or download this
    yapp -v myParser.yp
  2. or download this
    1 shift/reduce conflict
  3. or download this
    use MyParser;
  $parser=new MyParser();
...
  $nberr=$parser->YYNberr();
  $parser->YYData->{DATA}= [ 'a and ( b or c)' ];
  $data=$parser->YYData->{DATA}[0];
  4. or download this
    
Syntax error.
Can't locate object method "new" via package "MyParser" (perhaps you f
+orgot to l
oad "MyParser"?) at myparser.pl line 2, <STDIN> line 1.