https://svn.boost.org/trac10/ticket/10627 <p> xmldoc/ex_month_add.xml example is incomplete. </p> <pre class="wiki">error: 'add_month' was not declared in this scope add_month mf(1); ^ </pre><p> I think that this regression due to accidental removal of </p> <pre class="wiki"> typedef boost::date_time::month_functor&lt;date&gt; add_month; </pre><p> in this <a class="changeset" href="https://svn.boost.org/trac10/changeset/29259" title="tons of documentation updates for the 1.33 release ">[29259]</a> changeset </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/10627 Trac 1.4.3