<br>
 Insert another block: up to 2 arguments.<ul>
  <li>Argument 1: name of the block to insert.
  <li>Argument 2 (optional): a text to replace the title of the cited block.
 </ul>
For example, <tt>\\embed{embedded}</tt> insert the bloc <tt>embedded</tt> 
into the current block.

The same block can be inserted into several blocks,
or to different places of a same block. But one cannot insert a block of
another document.
<p>