ef="#cont_returns">return value
of <b><tt>gsdll_execute_cont()</tt></b></a>.  After calling
<b><tt>gsdll_exit()</tt></b>, there are two options:

<ul>
<li>Unload the DLL, either by terminating the application or by
calling <b><tt>DosFreeModule</tt></b> (OS/2) or <b><tt>FreeLibrary</tt></b> (MS Windows).

<li>Call <b><tt>gsdll_init()</tt></b> again to restart Ghostscript.
</ul>
</blockquote>

<h3><a name="lock_device"></a><b><tt>gsdll_lock_device()</tt></b></h3>

<blockquote>
Since the caller may be multithr