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<H1><A NAME="sec:B"><SPAN class="sec-nr">B</SPAN> <SPAN class="sec-title">Hackers
corner</SPAN></A></H1>
<A NAME="sec:hack"></A>
<P>This appendix describes a number of predicates which enable the
Prolog user to inspect the Prolog environment and manipulate (or even
redefine) the debugger. They can be used as entry points for experiments
with debugging tools for Prolog. The predicates described here should be
handled with some care as it is easy to corrupt the consistency of the
Prolog system by misusing them.
<P>
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<H2>Section Index</H2>
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<DIV class="toc-h2"><A class="sec" href="manipstack.html"><SPAN class="sec-nr">B.1</SPAN> <SPAN class="sec-title">Examining
the Environment Stack</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="tracehook.html"><SPAN class="sec-nr">B.2</SPAN> <SPAN class="sec-title">Intercepting
the Tracer</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="excepthook.html"><SPAN class="sec-nr">B.3</SPAN> <SPAN class="sec-title">Adding
context to errors: prolog_exception_hook</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="exception3.html"><SPAN class="sec-nr">B.4</SPAN> <SPAN class="sec-title">Hooks
using the exception predicate</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="intlibs.html"><SPAN class="sec-nr">B.5</SPAN> <SPAN class="sec-title">Hooks
for integrating libraries</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="loadfilehook.html"><SPAN class="sec-nr">B.6</SPAN> <SPAN class="sec-title">Hooks
for loading files</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="readline.html"><SPAN class="sec-nr">B.7</SPAN> <SPAN class="sec-title">Readline
Interaction</SPAN></A></DIV>
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