From: costello@mitre.org   
      
   Hi Folks,   
      
   I am building a parser to parse some data.   
      
   I want to filter some of the data.   
      
   For example, I want to "fuzz" latitude and longitude values to contain just   
   two digits to the right of the decimal point.   
      
       Fuzz this latitude value:   
             42.3583   
       to this:   
            42.35   
      
   When should filtering be done?   
      
   Should I embed filtering rules into the grammar -- perform filtering as I   
   build the parse tree?   
      
   Or, should I build the parse tree and then have an application perform   
   filtering on the parse tree?   
      
   /Roger   
      
   --- SoupGate-Win32 v1.05   
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