  syntax tree of the syntax tree</em>.</p>

<h2>Antiquotations</h2>

<p>The OCaml langage parser used, and its possible extensions, must
  have been built to allow the places of the antiquotations. The
  symbols enclosed by the meta-symbol "<tt>V</tt>" (see the chapter
  about <a href="grammars.html">extensible grammars</a>, section
  "symbols"), define where antiquotations can take place.</p>

<p>There is no need to specify antiquotations for the main types
  defined in the AST tree module ("<tt>MLast</tt>