Added ???_R and ???_D macros to reference

[SVN r12910]

doc/reference/comparison_less_equal.htm

@@ -42,6 +42,10 @@ otherwise.</p>
 
 <hr>
 
+<h2><a name="BOOST_PP_LESS_EQUAL_D">#define BOOST_PP_LESS_EQUAL_D</a>(D,X,Y)</h2>
+ <p>Can be used inside <a href="while.htm#BOOST_PP_WHILE">BOOST_PP_WHILE</a>().</p> 
+<hr>
+
 <h2><a name="BOOST_PREPROCESSOR_LESS_EQUAL">#define BOOST_PREPROCESSOR_LESS_EQUAL</a>(X,Y)</h2>
  <p>Obsolete. Use <a href="comparison_less_equal.htm#BOOST_PP_LESS_EQUAL">BOOST_PP_LESS_EQUAL</a>().</p> 
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