 by precedences and associativities are not reported.

  </dd><dt><tt>-compact_red</tt>   
  </dt><dd>Including this option enables a table compaction optimization involving
      reductions.  In particular, it allows the most common reduce entry in 
      each row of the parse action table to be used as the default for that 
      row.  This typically saves considerable room in the tables, which can 
      grow to be very large.  This optimization has the effect of replacing 
      all error entries in a r