rebuilt .html docs for privoxy version 3.0.26
[privoxy.git] / doc / webserver / user-manual / index.html
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6   <title>Privoxy 3.0.26 User Manual</title>
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18     <div class="TITLEPAGE">
19       <h1 class="TITLE"><a name="AEN2" id="AEN2">Privoxy 3.0.26 User
20       Manual</a></h1>
21
22       <p class="PUBDATE"><sub><a href="copyright.html">Copyright</a> &copy;
23       2001-2016 by <a href="https://www.privoxy.org/" target="_top">Privoxy
24       Developers</a></sub><br></p>
25
26       <p class="PUBDATE">$Id: user-manual.sgml,v 2.215 2016/07/28 08:25:33
27       fabiankeil Exp $<br></p>
28
29       <div>
30         <div class="ABSTRACT">
31           <a name="AEN9" id="AEN9"></a>
32
33           <p>The <i class="CITETITLE">Privoxy User Manual</i> gives users
34           information on how to install, configure and use <a href=
35           "https://www.privoxy.org/" target="_top">Privoxy</a>.</p>
36
37           <p>Privoxy is a non-caching web proxy with advanced filtering
38           capabilities for enhancing privacy, modifying web page data and
39           HTTP headers, controlling access, and removing ads and other
40           obnoxious Internet junk. Privoxy has a flexible configuration and
41           can be customized to suit individual needs and tastes. It has
42           application for both stand-alone systems and multi-user
43           networks.</p>
44
45           <p>Privoxy is Free Software and licensed under the GNU GPLv2.</p>
46
47           <p>Privoxy is an associated project of Software in the Public
48           Interest (SPI).</p>
49
50           <p>Helping hands and donations are welcome:</p>
51
52           <ul>
53             <li>
54               <p><a href=
55               "https://www.privoxy.org/faq/general.html#PARTICIPATE" target=
56               "_top">https://www.privoxy.org/faq/general.html#PARTICIPATE</a></p>
57             </li>
58
59             <li>
60               <p><a href="https://www.privoxy.org/faq/general.html#DONATE"
61               target=
62               "_top">https://www.privoxy.org/faq/general.html#DONATE</a></p>
63             </li>
64           </ul>
65
66           <p>You can find the latest version of the <i class=
67           "CITETITLE">Privoxy User Manual</i> at <a href=
68           "https://www.privoxy.org/user-manual/" target=
69           "_top">https://www.privoxy.org/user-manual/</a>. Please see the
70           <a href="contact.html">Contact section</a> on how to contact the
71           developers.</p>
72         </div>
73       </div>
74       <hr>
75     </div>
76
77     <div class="TOC">
78       <dl>
79         <dt><b>Table of Contents</b></dt>
80
81         <dt>1. <a href="introduction.html">Introduction</a></dt>
82
83         <dd>
84           <dl>
85             <dt>1.1. <a href="introduction.html#FEATURES">Features</a></dt>
86           </dl>
87         </dd>
88
89         <dt>2. <a href="installation.html">Installation</a></dt>
90
91         <dd>
92           <dl>
93             <dt>2.1. <a href="installation.html#INSTALLATION-PACKAGES">Binary
94             Packages</a></dt>
95
96             <dd>
97               <dl>
98                 <dt>2.1.1. <a href=
99                 "installation.html#INSTALLATION-DEB">Debian and
100                 Ubuntu</a></dt>
101
102                 <dt>2.1.2. <a href=
103                 "installation.html#INSTALLATION-PACK-WIN">Windows</a></dt>
104
105                 <dt>2.1.3. <a href=
106                 "installation.html#INSTALLATION-OS2">OS/2</a></dt>
107
108                 <dt>2.1.4. <a href="installation.html#INSTALLATION-MAC">Mac
109                 OS X</a></dt>
110
111                 <dt>2.1.5. <a href=
112                 "installation.html#OS-X-INSTALL-FROM-PACKAGE">Installation
113                 from ready-built package</a></dt>
114
115                 <dt>2.1.6. <a href=
116                 "installation.html#OS-X-INSTALL-FROM-SOURCE">Installation
117                 from source</a></dt>
118
119                 <dt>2.1.7. <a href=
120                 "installation.html#INSTALLATION-FREEBSD">FreeBSD</a></dt>
121               </dl>
122             </dd>
123
124             <dt>2.2. <a href="installation.html#INSTALLATION-SOURCE">Building
125             from Source</a></dt>
126
127             <dt>2.3. <a href=
128             "installation.html#INSTALLATION-KEEPUPDATED">Keeping your
129             Installation Up-to-Date</a></dt>
130           </dl>
131         </dd>
132
133         <dt>3. <a href="whatsnew.html">What's New in this Release</a></dt>
134
135         <dd>
136           <dl>
137             <dt>3.1. <a href="whatsnew.html#UPGRADERSNOTE">Note to
138             Upgraders</a></dt>
139           </dl>
140         </dd>
141
142         <dt>4. <a href="quickstart.html">Quickstart to Using Privoxy</a></dt>
143
144         <dd>
145           <dl>
146             <dt>4.1. <a href=
147             "quickstart.html#QUICKSTART-AD-BLOCKING">Quickstart to Ad
148             Blocking</a></dt>
149           </dl>
150         </dd>
151
152         <dt>5. <a href="startup.html">Starting Privoxy</a></dt>
153
154         <dd>
155           <dl>
156             <dt>5.1. <a href="startup.html#START-DEBIAN">Debian</a></dt>
157
158             <dt>5.2. <a href="startup.html#START-FREEBSD">FreeBSD and
159             ElectroBSD</a></dt>
160
161             <dt>5.3. <a href="startup.html#START-WINDOWS">Windows</a></dt>
162
163             <dt>5.4. <a href="startup.html#START-UNICES">Generic instructions
164             for Unix derivates (Solaris, NetBSD, HP-UX etc.)</a></dt>
165
166             <dt>5.5. <a href="startup.html#START-OS2">OS/2</a></dt>
167
168             <dt>5.6. <a href="startup.html#START-MACOSX">Mac OS X</a></dt>
169
170             <dt>5.7. <a href="startup.html#CMDOPTIONS">Command Line
171             Options</a></dt>
172           </dl>
173         </dd>
174
175         <dt>6. <a href="configuration.html">Privoxy Configuration</a></dt>
176
177         <dd>
178           <dl>
179             <dt>6.1. <a href=
180             "configuration.html#CONTROL-WITH-WEBBROWSER">Controlling Privoxy
181             with Your Web Browser</a></dt>
182
183             <dt>6.2. <a href="configuration.html#CONFOVERVIEW">Configuration
184             Files Overview</a></dt>
185           </dl>
186         </dd>
187
188         <dt>7. <a href="config.html">The Main Configuration File</a></dt>
189
190         <dd>
191           <dl>
192             <dt>7.1. <a href="config.html#LOCAL-SET-UP">Local Set-up
193             Documentation</a></dt>
194
195             <dd>
196               <dl>
197                 <dt>7.1.1. <a href=
198                 "config.html#USER-MANUAL">user-manual</a></dt>
199
200                 <dt>7.1.2. <a href=
201                 "config.html#TRUST-INFO-URL">trust-info-url</a></dt>
202
203                 <dt>7.1.3. <a href=
204                 "config.html#ADMIN-ADDRESS">admin-address</a></dt>
205
206                 <dt>7.1.4. <a href=
207                 "config.html#PROXY-INFO-URL">proxy-info-url</a></dt>
208               </dl>
209             </dd>
210
211             <dt>7.2. <a href="config.html#CONF-LOG-LOC">Configuration and Log
212             File Locations</a></dt>
213
214             <dd>
215               <dl>
216                 <dt>7.2.1. <a href="config.html#CONFDIR">confdir</a></dt>
217
218                 <dt>7.2.2. <a href="config.html#TEMPLDIR">templdir</a></dt>
219
220                 <dt>7.2.3. <a href=
221                 "config.html#TEMPORARY-DIRECTORY">temporary-directory</a></dt>
222
223                 <dt>7.2.4. <a href="config.html#LOGDIR">logdir</a></dt>
224
225                 <dt>7.2.5. <a href=
226                 "config.html#ACTIONSFILE">actionsfile</a></dt>
227
228                 <dt>7.2.6. <a href=
229                 "config.html#FILTERFILE">filterfile</a></dt>
230
231                 <dt>7.2.7. <a href="config.html#LOGFILE">logfile</a></dt>
232
233                 <dt>7.2.8. <a href="config.html#TRUSTFILE">trustfile</a></dt>
234               </dl>
235             </dd>
236
237             <dt>7.3. <a href="config.html#DEBUGGING">Debugging</a></dt>
238
239             <dd>
240               <dl>
241                 <dt>7.3.1. <a href="config.html#DEBUG">debug</a></dt>
242
243                 <dt>7.3.2. <a href=
244                 "config.html#SINGLE-THREADED">single-threaded</a></dt>
245
246                 <dt>7.3.3. <a href="config.html#HOSTNAME">hostname</a></dt>
247               </dl>
248             </dd>
249
250             <dt>7.4. <a href="config.html#ACCESS-CONTROL">Access Control and
251             Security</a></dt>
252
253             <dd>
254               <dl>
255                 <dt>7.4.1. <a href=
256                 "config.html#LISTEN-ADDRESS">listen-address</a></dt>
257
258                 <dt>7.4.2. <a href="config.html#TOGGLE">toggle</a></dt>
259
260                 <dt>7.4.3. <a href=
261                 "config.html#ENABLE-REMOTE-TOGGLE">enable-remote-toggle</a></dt>
262
263                 <dt>7.4.4. <a href=
264                 "config.html#ENABLE-REMOTE-HTTP-TOGGLE">enable-remote-http-toggle</a></dt>
265
266                 <dt>7.4.5. <a href=
267                 "config.html#ENABLE-EDIT-ACTIONS">enable-edit-actions</a></dt>
268
269                 <dt>7.4.6. <a href=
270                 "config.html#ENFORCE-BLOCKS">enforce-blocks</a></dt>
271
272                 <dt>7.4.7. <a href="config.html#ACLS">ACLs: permit-access and
273                 deny-access</a></dt>
274
275                 <dt>7.4.8. <a href=
276                 "config.html#BUFFER-LIMIT">buffer-limit</a></dt>
277
278                 <dt>7.4.9. <a href=
279                 "config.html#ENABLE-PROXY-AUTHENTICATION-FORWARDING">enable-proxy-authentication-forwarding</a></dt>
280               </dl>
281             </dd>
282
283             <dt>7.5. <a href="config.html#FORWARDING">Forwarding</a></dt>
284
285             <dd>
286               <dl>
287                 <dt>7.5.1. <a href="config.html#FORWARD">forward</a></dt>
288
289                 <dt>7.5.2. <a href="config.html#SOCKS">forward-socks4,
290                 forward-socks4a, forward-socks5 and forward-socks5t</a></dt>
291
292                 <dt>7.5.3. <a href=
293                 "config.html#ADVANCED-FORWARDING-EXAMPLES">Advanced
294                 Forwarding Examples</a></dt>
295
296                 <dt>7.5.4. <a href=
297                 "config.html#FORWARDED-CONNECT-RETRIES">forwarded-connect-retries</a></dt>
298               </dl>
299             </dd>
300
301             <dt>7.6. <a href="config.html#MISC">Miscellaneous</a></dt>
302
303             <dd>
304               <dl>
305                 <dt>7.6.1. <a href=
306                 "config.html#ACCEPT-INTERCEPTED-REQUESTS">accept-intercepted-requests</a></dt>
307
308                 <dt>7.6.2. <a href=
309                 "config.html#ALLOW-CGI-REQUEST-CRUNCHING">allow-cgi-request-crunching</a></dt>
310
311                 <dt>7.6.3. <a href=
312                 "config.html#SPLIT-LARGE-FORMS">split-large-forms</a></dt>
313
314                 <dt>7.6.4. <a href=
315                 "config.html#KEEP-ALIVE-TIMEOUT">keep-alive-timeout</a></dt>
316
317                 <dt>7.6.5. <a href=
318                 "config.html#TOLERATE-PIPELINING">tolerate-pipelining</a></dt>
319
320                 <dt>7.6.6. <a href=
321                 "config.html#DEFAULT-SERVER-TIMEOUT">default-server-timeout</a></dt>
322
323                 <dt>7.6.7. <a href=
324                 "config.html#CONNECTION-SHARING">connection-sharing</a></dt>
325
326                 <dt>7.6.8. <a href=
327                 "config.html#SOCKET-TIMEOUT">socket-timeout</a></dt>
328
329                 <dt>7.6.9. <a href=
330                 "config.html#MAX-CLIENT-CONNECTIONS">max-client-connections</a></dt>
331
332                 <dt>7.6.10. <a href=
333                 "config.html#HANDLE-AS-EMPTY-DOC-RETURNS-OK">handle-as-empty-doc-returns-ok</a></dt>
334
335                 <dt>7.6.11. <a href=
336                 "config.html#ENABLE-COMPRESSION">enable-compression</a></dt>
337
338                 <dt>7.6.12. <a href=
339                 "config.html#COMPRESSION-LEVEL">compression-level</a></dt>
340
341                 <dt>7.6.13. <a href=
342                 "config.html#CLIENT-HEADER-ORDER">client-header-order</a></dt>
343
344                 <dt>7.6.14. <a href=
345                 "config.html#CLIENT-SPECIFIC-TAG">client-specific-tag</a></dt>
346
347                 <dt>7.6.15. <a href=
348                 "config.html#CLIENT-TAG-LIFETIME">client-tag-lifetime</a></dt>
349
350                 <dt>7.6.16. <a href=
351                 "config.html#TRUST-X-FORWARDED-FOR">trust-x-forwarded-for</a></dt>
352               </dl>
353             </dd>
354
355             <dt>7.7. <a href="config.html#WINDOWS-GUI">Windows GUI
356             Options</a></dt>
357           </dl>
358         </dd>
359
360         <dt>8. <a href="actions-file.html">Actions Files</a></dt>
361
362         <dd>
363           <dl>
364             <dt>8.1. <a href="actions-file.html#RIGHT-MIX">Finding the Right
365             Mix</a></dt>
366
367             <dt>8.2. <a href="actions-file.html#HOW-TO-EDIT">How to
368             Edit</a></dt>
369
370             <dt>8.3. <a href="actions-file.html#ACTIONS-APPLY">How Actions
371             are Applied to Requests</a></dt>
372
373             <dt>8.4. <a href=
374             "actions-file.html#AF-PATTERNS">Patterns</a></dt>
375
376             <dd>
377               <dl>
378                 <dt>8.4.1. <a href="actions-file.html#HOST-PATTERN">The Host
379                 Pattern</a></dt>
380
381                 <dt>8.4.2. <a href="actions-file.html#PATH-PATTERN">The Path
382                 Pattern</a></dt>
383
384                 <dt>8.4.3. <a href="actions-file.html#TAG-PATTERN">The
385                 Request Tag Pattern</a></dt>
386
387                 <dt>8.4.4. <a href=
388                 "actions-file.html#NEGATIVE-TAG-PATTERNS">The Negative
389                 Request Tag Patterns</a></dt>
390
391                 <dt>8.4.5. <a href="actions-file.html#CLIENT-TAG-PATTERN">The
392                 Client Tag Pattern</a></dt>
393               </dl>
394             </dd>
395
396             <dt>8.5. <a href="actions-file.html#ACTIONS">Actions</a></dt>
397
398             <dd>
399               <dl>
400                 <dt>8.5.1. <a href=
401                 "actions-file.html#ADD-HEADER">add-header</a></dt>
402
403                 <dt>8.5.2. <a href="actions-file.html#BLOCK">block</a></dt>
404
405                 <dt>8.5.3. <a href=
406                 "actions-file.html#CHANGE-X-FORWARDED-FOR">change-x-forwarded-for</a></dt>
407
408                 <dt>8.5.4. <a href=
409                 "actions-file.html#CLIENT-HEADER-FILTER">client-header-filter</a></dt>
410
411                 <dt>8.5.5. <a href=
412                 "actions-file.html#CLIENT-HEADER-TAGGER">client-header-tagger</a></dt>
413
414                 <dt>8.5.6. <a href=
415                 "actions-file.html#CONTENT-TYPE-OVERWRITE">content-type-overwrite</a></dt>
416
417                 <dt>8.5.7. <a href=
418                 "actions-file.html#CRUNCH-CLIENT-HEADER">crunch-client-header</a></dt>
419
420                 <dt>8.5.8. <a href=
421                 "actions-file.html#CRUNCH-IF-NONE-MATCH">crunch-if-none-match</a></dt>
422
423                 <dt>8.5.9. <a href=
424                 "actions-file.html#CRUNCH-INCOMING-COOKIES">crunch-incoming-cookies</a></dt>
425
426                 <dt>8.5.10. <a href=
427                 "actions-file.html#CRUNCH-SERVER-HEADER">crunch-server-header</a></dt>
428
429                 <dt>8.5.11. <a href=
430                 "actions-file.html#CRUNCH-OUTGOING-COOKIES">crunch-outgoing-cookies</a></dt>
431
432                 <dt>8.5.12. <a href=
433                 "actions-file.html#DEANIMATE-GIFS">deanimate-gifs</a></dt>
434
435                 <dt>8.5.13. <a href=
436                 "actions-file.html#DOWNGRADE-HTTP-VERSION">downgrade-http-version</a></dt>
437
438                 <dt>8.5.14. <a href=
439                 "actions-file.html#EXTERNAL-FILTER">external-filter</a></dt>
440
441                 <dt>8.5.15. <a href=
442                 "actions-file.html#FAST-REDIRECTS">fast-redirects</a></dt>
443
444                 <dt>8.5.16. <a href=
445                 "actions-file.html#FILTER">filter</a></dt>
446
447                 <dt>8.5.17. <a href=
448                 "actions-file.html#FORCE-TEXT-MODE">force-text-mode</a></dt>
449
450                 <dt>8.5.18. <a href=
451                 "actions-file.html#FORWARD-OVERRIDE">forward-override</a></dt>
452
453                 <dt>8.5.19. <a href=
454                 "actions-file.html#HANDLE-AS-EMPTY-DOCUMENT">handle-as-empty-document</a></dt>
455
456                 <dt>8.5.20. <a href=
457                 "actions-file.html#HANDLE-AS-IMAGE">handle-as-image</a></dt>
458
459                 <dt>8.5.21. <a href=
460                 "actions-file.html#HIDE-ACCEPT-LANGUAGE">hide-accept-language</a></dt>
461
462                 <dt>8.5.22. <a href=
463                 "actions-file.html#HIDE-CONTENT-DISPOSITION">hide-content-disposition</a></dt>
464
465                 <dt>8.5.23. <a href=
466                 "actions-file.html#HIDE-IF-MODIFIED-SINCE">hide-if-modified-since</a></dt>
467
468                 <dt>8.5.24. <a href=
469                 "actions-file.html#HIDE-FROM-HEADER">hide-from-header</a></dt>
470
471                 <dt>8.5.25. <a href=
472                 "actions-file.html#HIDE-REFERRER">hide-referrer</a></dt>
473
474                 <dt>8.5.26. <a href=
475                 "actions-file.html#HIDE-USER-AGENT">hide-user-agent</a></dt>
476
477                 <dt>8.5.27. <a href=
478                 "actions-file.html#LIMIT-CONNECT">limit-connect</a></dt>
479
480                 <dt>8.5.28. <a href=
481                 "actions-file.html#LIMIT-COOKIE-LIFETIME">limit-cookie-lifetime</a></dt>
482
483                 <dt>8.5.29. <a href=
484                 "actions-file.html#PREVENT-COMPRESSION">prevent-compression</a></dt>
485
486                 <dt>8.5.30. <a href=
487                 "actions-file.html#OVERWRITE-LAST-MODIFIED">overwrite-last-modified</a></dt>
488
489                 <dt>8.5.31. <a href=
490                 "actions-file.html#REDIRECT">redirect</a></dt>
491
492                 <dt>8.5.32. <a href=
493                 "actions-file.html#SERVER-HEADER-FILTER">server-header-filter</a></dt>
494
495                 <dt>8.5.33. <a href=
496                 "actions-file.html#SERVER-HEADER-TAGGER">server-header-tagger</a></dt>
497
498                 <dt>8.5.34. <a href=
499                 "actions-file.html#SESSION-COOKIES-ONLY">session-cookies-only</a></dt>
500
501                 <dt>8.5.35. <a href=
502                 "actions-file.html#SET-IMAGE-BLOCKER">set-image-blocker</a></dt>
503
504                 <dt>8.5.36. <a href=
505                 "actions-file.html#SUMMARY">Summary</a></dt>
506               </dl>
507             </dd>
508
509             <dt>8.6. <a href="actions-file.html#ALIASES">Aliases</a></dt>
510
511             <dt>8.7. <a href="actions-file.html#ACT-EXAMPLES">Actions Files
512             Tutorial</a></dt>
513
514             <dd>
515               <dl>
516                 <dt>8.7.1. <a href=
517                 "actions-file.html#MATCH-ALL">match-all.action</a></dt>
518
519                 <dt>8.7.2. <a href=
520                 "actions-file.html#DEFAULT-ACTION">default.action</a></dt>
521
522                 <dt>8.7.3. <a href=
523                 "actions-file.html#USER-ACTION">user.action</a></dt>
524               </dl>
525             </dd>
526           </dl>
527         </dd>
528
529         <dt>9. <a href="filter-file.html">Filter Files</a></dt>
530
531         <dd>
532           <dl>
533             <dt>9.1. <a href="filter-file.html#FILTER-FILE-TUT">Filter File
534             Tutorial</a></dt>
535
536             <dt>9.2. <a href="filter-file.html#PREDEFINED-FILTERS">The
537             Pre-defined Filters</a></dt>
538
539             <dt>9.3. <a href=
540             "filter-file.html#EXTERNAL-FILTER-SYNTAX">External filter
541             syntax</a></dt>
542           </dl>
543         </dd>
544
545         <dt>10. <a href="templates.html">Privoxy's Template Files</a></dt>
546
547         <dt>11. <a href="contact.html">Contacting the Developers, Bug
548         Reporting and Feature Requests</a></dt>
549
550         <dd>
551           <dl>
552             <dt>11.1. <a href="contact.html#SUFFICIENT-INFORMATION">Please
553             provide sufficient information</a></dt>
554
555             <dt>11.2. <a href="contact.html#CONTACT-SUPPORT">Get
556             Support</a></dt>
557
558             <dt>11.3. <a href="contact.html#REPORTING">Reporting
559             Problems</a></dt>
560
561             <dd>
562               <dl>
563                 <dt>11.3.1. <a href="contact.html#CONTACT-ADS">Reporting Ads
564                 or Other Configuration Problems</a></dt>
565
566                 <dt>11.3.2. <a href="contact.html#CONTACT-BUGS">Reporting
567                 Bugs</a></dt>
568               </dl>
569             </dd>
570
571             <dt>11.4. <a href="contact.html#SECURITY-CONTACT">Reporting
572             security problems</a></dt>
573
574             <dt>11.5. <a href="contact.html#MAILING-LISTS">Mailing
575             Lists</a></dt>
576
577             <dt>11.6. <a href="contact.html#SF-TRACKERS">SourceForge support
578             trackers</a></dt>
579           </dl>
580         </dd>
581
582         <dt>12. <a href="copyright.html">Privoxy Copyright, License and
583         History</a></dt>
584
585         <dd>
586           <dl>
587             <dt>12.1. <a href="copyright.html#LICENSE">License</a></dt>
588
589             <dt>12.2. <a href="copyright.html#HISTORY">History</a></dt>
590
591             <dt>12.3. <a href="copyright.html#AUTHORS">Authors</a></dt>
592           </dl>
593         </dd>
594
595         <dt>13. <a href="seealso.html">See Also</a></dt>
596
597         <dt>14. <a href="appendix.html">Appendix</a></dt>
598
599         <dd>
600           <dl>
601             <dt>14.1. <a href="appendix.html#REGEX">Regular
602             Expressions</a></dt>
603
604             <dt>14.2. <a href="appendix.html#INTERNAL-PAGES">Privoxy's
605             Internal Pages</a></dt>
606
607             <dt>14.3. <a href="appendix.html#CHAIN">Chain of Events</a></dt>
608
609             <dt>14.4. <a href="appendix.html#ACTIONSANAT">Troubleshooting:
610             Anatomy of an Action</a></dt>
611           </dl>
612         </dd>
613       </dl>
614     </div>
615   </div>
616
617   <div class="NAVFOOTER">
618     <hr align="left" width="100%">
619
620     <table summary="Footer navigation table" width="100%" border="0"
621     cellpadding="0" cellspacing="0">
622       <tr>
623         <td width="33%" align="left" valign="top">&nbsp;</td>
624
625         <td width="34%" align="center" valign="top">&nbsp;</td>
626
627         <td width="33%" align="right" valign="top"><a href=
628         "introduction.html" accesskey="N">Next</a></td>
629       </tr>
630
631       <tr>
632         <td width="33%" align="left" valign="top">&nbsp;</td>
633
634         <td width="34%" align="center" valign="top">&nbsp;</td>
635
636         <td width="33%" align="right" valign="top">Introduction</td>
637       </tr>
638     </table>
639   </div>
640 </body>
641 </html>