h calls the call-back function cb.
                  </p>
                  <p>
                    If the call-back returns false then the algorithm returns without
                    considering further matches in the current file, or any further
                    files.
                  </p>
                  <p>
                    The parameter <span class="emphasis"><em>files</em></span> can include wild card
                    characters '*' and '?', if the parameter recurse is true then
       