'g, 'h) <a href="Pervasives.html#TYPEformat6">format6</a> -&gt;<br>       ('a, 'b, 'c, 'd, 'g, 'h) <a href="Pervasives.html#TYPEformat6">format6</a></code></pre><div class="info ">
<code class="code">f1 ^^ f2</code> catenates format strings <code class="code">f1</code> and <code class="code">f2</code>. The result is a
  format string that behaves as the concatenation of format strings <code class="code">f1</code> and
  <code class="code">f2</code>: in case of formatted output, it accepts arguments from <cod