out the values of the variables using this technique.

<h2>Key points</h2>

<ul>
<li>When a global variable has the type "<tt>char *</tt>", SWIG manages it as a character
string.   However, whenever the value of such a variable is set from Python, the old
value is destroyed using <tt>free()</tt> or <tt>delete</tt> (the choice of which depends
on whether or not SWIG was run with the -c++ option).
<li><tt>signed char</tt> and <tt>unsigned char</tt> are handled as small 8-bit integers.
<li>String array variabl