Length        1        5.1    &lt;NA&gt;   
#&gt;   --------------------------------------------
#&gt; 
#&gt; 
#&gt; All rows are shown in table below
#&gt; 
#&gt;   ===========================================
#&gt;     VARIABLE    ..ROWNUMBER..  BASE  COMPARE 
#&gt;   -------------------------------------------
#&gt;    Sepal.Width        1        3.5      5    
#&gt;   -------------------------------------------
#&gt; 
#&gt; 
#&gt; All rows are shown in table below
#&gt; 
#&gt;   =========================