 by the program core. They
deal with the I/O, element and sequence declaration,
sequence manipulation, statement flow control (e.g.
IF, WHILE), MACRO declaration, saving sequences onto files in MAD-X or
MAD-8 format, and so on.
<ul>
<li><h3>Program flow control</h3>
  <ul>
  <li><a href="special.html#if">IF</a>
  <li><a href="special.html#elseif">ELSEIF</a>
  <li><a href="special.html#else">ELSE</a>
  <li><a href="special.html#while">WHILE</a>
  <li><a href="special.html#macro">MACRO</a>
  </ul>
<p>
<li><h3