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  15       <h1 class="TITLE"><a name="AEN2" id="AEN2">Privoxy 3.0.29 User Manual</a></h1>
  16       <p class="PUBDATE"><sub><a href="copyright.html">Copyright</a> &copy; 2001-2020 by <a href=
  17       "https://www.privoxy.org/" target="_top">Privoxy Developers</a></sub><br></p>
  18       <div>
  19         <div class="ABSTRACT">
  20           <a name="AEN8" id="AEN8"></a>
  21           <p>The <i class="CITETITLE">Privoxy User Manual</i> gives users information on how to install, configure and
  22           use <a href="https://www.privoxy.org/" target="_top">Privoxy</a>.</p>
  23           <p>Privoxy is a non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying
  24           web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk.
  25           Privoxy has a flexible configuration and can be customized to suit individual needs and tastes. It has
  26           application for both stand-alone systems and multi-user networks.</p>
  27           <p>Privoxy is Free Software and licensed under the GNU GPLv2.</p>
  28           <p>Privoxy is an associated project of Software in the Public Interest (SPI).</p>
  29           <p>Helping hands and donations are welcome:</p>
  30           <ul>
  31             <li>
  32               <p><a href="https://www.privoxy.org/faq/general.html#PARTICIPATE" target=
  33               "_top">https://www.privoxy.org/faq/general.html#PARTICIPATE</a></p>
  34             </li>
  35             <li>
  36               <p><a href="https://www.privoxy.org/faq/general.html#DONATE" target=
  37               "_top">https://www.privoxy.org/faq/general.html#DONATE</a></p>
  38             </li>
  39           </ul>
  40           <p>You can find the latest version of the <i class="CITETITLE">Privoxy User Manual</i> at <a href=
  41           "https://www.privoxy.org/user-manual/" target="_top">https://www.privoxy.org/user-manual/</a>. Please see the
  42           <a href="contact.html">Contact section</a> on how to contact the developers.</p>
  43         </div>
  44       </div>
  45       <hr>
  46     </div>
  47     <div class="TOC">
  48       <dl>
  49         <dt><b>Table of Contents</b></dt>
  50         <dt>1. <a href="introduction.html">Introduction</a></dt>
  51         <dd>
  52           <dl>
  53             <dt>1.1. <a href="introduction.html#FEATURES">Features</a></dt>
  54           </dl>
  55         </dd>
  56         <dt>2. <a href="installation.html">Installation</a></dt>
  57         <dd>
  58           <dl>
  59             <dt>2.1. <a href="installation.html#INSTALLATION-PACKAGES">Binary Packages</a></dt>
  60             <dd>
  61               <dl>
  62                 <dt>2.1.1. <a href="installation.html#INSTALLATION-DEB">Debian and Ubuntu</a></dt>
  63                 <dt>2.1.2. <a href="installation.html#INSTALLATION-PACK-WIN">Windows</a></dt>
  64                 <dt>2.1.3. <a href="installation.html#INSTALLATION-OS2">OS/2</a></dt>
  65                 <dt>2.1.4. <a href="installation.html#INSTALLATION-MAC">Mac OS X</a></dt>
  66                 <dt>2.1.5. <a href="installation.html#OS-X-INSTALL-FROM-PACKAGE">Installation from ready-built
  67                 package</a></dt>
  68                 <dt>2.1.6. <a href="installation.html#OS-X-INSTALL-FROM-SOURCE">Installation from source</a></dt>
  69                 <dt>2.1.7. <a href="installation.html#INSTALLATION-FREEBSD">FreeBSD</a></dt>
  70               </dl>
  71             </dd>
  72             <dt>2.2. <a href="installation.html#INSTALLATION-SOURCE">Building from Source</a></dt>
  73             <dd>
  74               <dl>
  75                 <dt>2.2.1. <a href="installation.html#WINBUILD-CYGWIN">Windows</a></dt>
  76               </dl>
  77             </dd>
  78             <dt>2.3. <a href="installation.html#INSTALLATION-KEEPUPDATED">Keeping your Installation Up-to-Date</a></dt>
  79           </dl>
  80         </dd>
  81         <dt>3. <a href="whatsnew.html">What's New in this Release</a></dt>
  82         <dd>
  83           <dl>
  84             <dt>3.1. <a href="whatsnew.html#UPGRADERSNOTE">Note to Upgraders</a></dt>
  85           </dl>
  86         </dd>
  87         <dt>4. <a href="quickstart.html">Quickstart to Using Privoxy</a></dt>
  88         <dd>
  89           <dl>
  90             <dt>4.1. <a href="quickstart.html#QUICKSTART-AD-BLOCKING">Quickstart to Ad Blocking</a></dt>
  91           </dl>
  92         </dd>
  93         <dt>5. <a href="startup.html">Starting Privoxy</a></dt>
  94         <dd>
  95           <dl>
  96             <dt>5.1. <a href="startup.html#START-DEBIAN">Debian</a></dt>
  97             <dt>5.2. <a href="startup.html#START-FREEBSD">FreeBSD and ElectroBSD</a></dt>
  98             <dt>5.3. <a href="startup.html#START-WINDOWS">Windows</a></dt>
  99             <dt>5.4. <a href="startup.html#START-UNICES">Generic instructions for Unix derivates (Solaris, NetBSD,
 100             HP-UX etc.)</a></dt>
 101             <dt>5.5. <a href="startup.html#START-OS2">OS/2</a></dt>
 102             <dt>5.6. <a href="startup.html#START-MACOSX">Mac OS X</a></dt>
 103             <dt>5.7. <a href="startup.html#CMDOPTIONS">Command Line Options</a></dt>
 104           </dl>
 105         </dd>
 106         <dt>6. <a href="configuration.html">Privoxy Configuration</a></dt>
 107         <dd>
 108           <dl>
 109             <dt>6.1. <a href="configuration.html#CONTROL-WITH-WEBBROWSER">Controlling Privoxy with Your Web
 110             Browser</a></dt>
 111             <dt>6.2. <a href="configuration.html#CONFOVERVIEW">Configuration Files Overview</a></dt>
 112           </dl>
 113         </dd>
 114         <dt>7. <a href="config.html">The Main Configuration File</a></dt>
 115         <dd>
 116           <dl>
 117             <dt>7.1. <a href="config.html#LOCAL-SET-UP">Local Set-up Documentation</a></dt>
 118             <dd>
 119               <dl>
 120                 <dt>7.1.1. <a href="config.html#USER-MANUAL">user-manual</a></dt>
 121                 <dt>7.1.2. <a href="config.html#TRUST-INFO-URL">trust-info-url</a></dt>
 122                 <dt>7.1.3. <a href="config.html#ADMIN-ADDRESS">admin-address</a></dt>
 123                 <dt>7.1.4. <a href="config.html#PROXY-INFO-URL">proxy-info-url</a></dt>
 124               </dl>
 125             </dd>
 126             <dt>7.2. <a href="config.html#CONF-LOG-LOC">Configuration and Log File Locations</a></dt>
 127             <dd>
 128               <dl>
 129                 <dt>7.2.1. <a href="config.html#CONFDIR">confdir</a></dt>
 130                 <dt>7.2.2. <a href="config.html#TEMPLDIR">templdir</a></dt>
 131                 <dt>7.2.3. <a href="config.html#TEMPORARY-DIRECTORY">temporary-directory</a></dt>
 132                 <dt>7.2.4. <a href="config.html#LOGDIR">logdir</a></dt>
 133                 <dt>7.2.5. <a href="config.html#ACTIONSFILE">actionsfile</a></dt>
 134                 <dt>7.2.6. <a href="config.html#FILTERFILE">filterfile</a></dt>
 135                 <dt>7.2.7. <a href="config.html#LOGFILE">logfile</a></dt>
 136                 <dt>7.2.8. <a href="config.html#TRUSTFILE">trustfile</a></dt>
 137               </dl>
 138             </dd>
 139             <dt>7.3. <a href="config.html#DEBUGGING">Debugging</a></dt>
 140             <dd>
 141               <dl>
 142                 <dt>7.3.1. <a href="config.html#DEBUG">debug</a></dt>
 143                 <dt>7.3.2. <a href="config.html#SINGLE-THREADED">single-threaded</a></dt>
 144                 <dt>7.3.3. <a href="config.html#HOSTNAME">hostname</a></dt>
 145               </dl>
 146             </dd>
 147             <dt>7.4. <a href="config.html#ACCESS-CONTROL">Access Control and Security</a></dt>
 148             <dd>
 149               <dl>
 150                 <dt>7.4.1. <a href="config.html#LISTEN-ADDRESS">listen-address</a></dt>
 151                 <dt>7.4.2. <a href="config.html#TOGGLE">toggle</a></dt>
 152                 <dt>7.4.3. <a href="config.html#ENABLE-REMOTE-TOGGLE">enable-remote-toggle</a></dt>
 153                 <dt>7.4.4. <a href="config.html#ENABLE-REMOTE-HTTP-TOGGLE">enable-remote-http-toggle</a></dt>
 154                 <dt>7.4.5. <a href="config.html#ENABLE-EDIT-ACTIONS">enable-edit-actions</a></dt>
 155                 <dt>7.4.6. <a href="config.html#ENFORCE-BLOCKS">enforce-blocks</a></dt>
 156                 <dt>7.4.7. <a href="config.html#ACLS">ACLs: permit-access and deny-access</a></dt>
 157                 <dt>7.4.8. <a href="config.html#BUFFER-LIMIT">buffer-limit</a></dt>
 158                 <dt>7.4.9. <a href=
 159                 "config.html#ENABLE-PROXY-AUTHENTICATION-FORWARDING">enable-proxy-authentication-forwarding</a></dt>
 160                 <dt>7.4.10. <a href="config.html#TRUSTED-CGI-REFERER">trusted-cgi-referer</a></dt>
 161                 <dt>7.4.11. <a href="config.html#CORS-ALLOWED-ORIGIN">cors-allowed-origin</a></dt>
 162               </dl>
 163             </dd>
 164             <dt>7.5. <a href="config.html#FORWARDING">Forwarding</a></dt>
 165             <dd>
 166               <dl>
 167                 <dt>7.5.1. <a href="config.html#FORWARD">forward</a></dt>
 168                 <dt>7.5.2. <a href="config.html#SOCKS">forward-socks4, forward-socks4a, forward-socks5 and
 169                 forward-socks5t</a></dt>
 170                 <dt>7.5.3. <a href="config.html#ADVANCED-FORWARDING-EXAMPLES">Advanced Forwarding Examples</a></dt>
 171                 <dt>7.5.4. <a href="config.html#FORWARDED-CONNECT-RETRIES">forwarded-connect-retries</a></dt>
 172               </dl>
 173             </dd>
 174             <dt>7.6. <a href="config.html#MISC">Miscellaneous</a></dt>
 175             <dd>
 176               <dl>
 177                 <dt>7.6.1. <a href="config.html#ACCEPT-INTERCEPTED-REQUESTS">accept-intercepted-requests</a></dt>
 178                 <dt>7.6.2. <a href="config.html#ALLOW-CGI-REQUEST-CRUNCHING">allow-cgi-request-crunching</a></dt>
 179                 <dt>7.6.3. <a href="config.html#SPLIT-LARGE-FORMS">split-large-forms</a></dt>
 180                 <dt>7.6.4. <a href="config.html#KEEP-ALIVE-TIMEOUT">keep-alive-timeout</a></dt>
 181                 <dt>7.6.5. <a href="config.html#TOLERATE-PIPELINING">tolerate-pipelining</a></dt>
 182                 <dt>7.6.6. <a href="config.html#DEFAULT-SERVER-TIMEOUT">default-server-timeout</a></dt>
 183                 <dt>7.6.7. <a href="config.html#CONNECTION-SHARING">connection-sharing</a></dt>
 184                 <dt>7.6.8. <a href="config.html#SOCKET-TIMEOUT">socket-timeout</a></dt>
 185                 <dt>7.6.9. <a href="config.html#MAX-CLIENT-CONNECTIONS">max-client-connections</a></dt>
 186                 <dt>7.6.10. <a href="config.html#LISTEN-BACKLOG">listen-backlog</a></dt>
 187                 <dt>7.6.11. <a href="config.html#ENABLE-ACCEPT-FILTER">enable-accept-filter</a></dt>
 188                 <dt>7.6.12. <a href=
 189                 "config.html#HANDLE-AS-EMPTY-DOC-RETURNS-OK">handle-as-empty-doc-returns-ok</a></dt>
 190                 <dt>7.6.13. <a href="config.html#ENABLE-COMPRESSION">enable-compression</a></dt>
 191                 <dt>7.6.14. <a href="config.html#COMPRESSION-LEVEL">compression-level</a></dt>
 192                 <dt>7.6.15. <a href="config.html#CLIENT-HEADER-ORDER">client-header-order</a></dt>
 193                 <dt>7.6.16. <a href="config.html#CLIENT-SPECIFIC-TAG">client-specific-tag</a></dt>
 194                 <dt>7.6.17. <a href="config.html#CLIENT-TAG-LIFETIME">client-tag-lifetime</a></dt>
 195                 <dt>7.6.18. <a href="config.html#TRUST-X-FORWARDED-FOR">trust-x-forwarded-for</a></dt>
 196                 <dt>7.6.19. <a href="config.html#RECEIVE-BUFFER-SIZE">receive-buffer-size</a></dt>
 197               </dl>
 198             </dd>
 199             <dt>7.7. <a href="config.html#TLS">TLS/SSL</a></dt>
 200             <dd>
 201               <dl>
 202                 <dt>7.7.1. <a href="config.html#CA-DIRECTORY">ca-directory</a></dt>
 203                 <dt>7.7.2. <a href="config.html#CA-CERT-FILE">ca-cert-file</a></dt>
 204                 <dt>7.7.3. <a href="config.html#CA-KEY-FILE">ca-key-file</a></dt>
 205                 <dt>7.7.4. <a href="config.html#CA-PASSWORD">ca-password</a></dt>
 206                 <dt>7.7.5. <a href="config.html#CERTIFICATE-DIRECTORY">certificate-directory</a></dt>
 207                 <dt>7.7.6. <a href="config.html#TRUSTED-CAS-FILE">trusted-cas-file</a></dt>
 208               </dl>
 209             </dd>
 210             <dt>7.8. <a href="config.html#WINDOWS-GUI">Windows GUI Options</a></dt>
 211           </dl>
 212         </dd>
 213         <dt>8. <a href="actions-file.html">Actions Files</a></dt>
 214         <dd>
 215           <dl>
 216             <dt>8.1. <a href="actions-file.html#RIGHT-MIX">Finding the Right Mix</a></dt>
 217             <dt>8.2. <a href="actions-file.html#HOW-TO-EDIT">How to Edit</a></dt>
 218             <dt>8.3. <a href="actions-file.html#ACTIONS-APPLY">How Actions are Applied to Requests</a></dt>
 219             <dt>8.4. <a href="actions-file.html#AF-PATTERNS">Patterns</a></dt>
 220             <dd>
 221               <dl>
 222                 <dt>8.4.1. <a href="actions-file.html#HOST-PATTERN">The Host Pattern</a></dt>
 223                 <dt>8.4.2. <a href="actions-file.html#PATH-PATTERN">The Path Pattern</a></dt>
 224                 <dt>8.4.3. <a href="actions-file.html#TAG-PATTERN">The Request Tag Pattern</a></dt>
 225                 <dt>8.4.4. <a href="actions-file.html#NEGATIVE-TAG-PATTERNS">The Negative Request Tag Patterns</a></dt>
 226                 <dt>8.4.5. <a href="actions-file.html#CLIENT-TAG-PATTERN">The Client Tag Pattern</a></dt>
 227               </dl>
 228             </dd>
 229             <dt>8.5. <a href="actions-file.html#ACTIONS">Actions</a></dt>
 230             <dd>
 231               <dl>
 232                 <dt>8.5.1. <a href="actions-file.html#ADD-HEADER">add-header</a></dt>
 233                 <dt>8.5.2. <a href="actions-file.html#BLOCK">block</a></dt>
 234                 <dt>8.5.3. <a href="actions-file.html#CHANGE-X-FORWARDED-FOR">change-x-forwarded-for</a></dt>
 235                 <dt>8.5.4. <a href="actions-file.html#CLIENT-HEADER-FILTER">client-header-filter</a></dt>
 236                 <dt>8.5.5. <a href="actions-file.html#CLIENT-HEADER-TAGGER">client-header-tagger</a></dt>
 237                 <dt>8.5.6. <a href="actions-file.html#CONTENT-TYPE-OVERWRITE">content-type-overwrite</a></dt>
 238                 <dt>8.5.7. <a href="actions-file.html#CRUNCH-CLIENT-HEADER">crunch-client-header</a></dt>
 239                 <dt>8.5.8. <a href="actions-file.html#CRUNCH-IF-NONE-MATCH">crunch-if-none-match</a></dt>
 240                 <dt>8.5.9. <a href="actions-file.html#CRUNCH-INCOMING-COOKIES">crunch-incoming-cookies</a></dt>
 241                 <dt>8.5.10. <a href="actions-file.html#CRUNCH-SERVER-HEADER">crunch-server-header</a></dt>
 242                 <dt>8.5.11. <a href="actions-file.html#CRUNCH-OUTGOING-COOKIES">crunch-outgoing-cookies</a></dt>
 243                 <dt>8.5.12. <a href="actions-file.html#DEANIMATE-GIFS">deanimate-gifs</a></dt>
 244                 <dt>8.5.13. <a href="actions-file.html#DELAY-RESPONSE">delay-response</a></dt>
 245                 <dt>8.5.14. <a href="actions-file.html#DOWNGRADE-HTTP-VERSION">downgrade-http-version</a></dt>
 246                 <dt>8.5.15. <a href="actions-file.html#EXTERNAL-FILTER">external-filter</a></dt>
 247                 <dt>8.5.16. <a href="actions-file.html#FAST-REDIRECTS">fast-redirects</a></dt>
 248                 <dt>8.5.17. <a href="actions-file.html#FILTER">filter</a></dt>
 249                 <dt>8.5.18. <a href="actions-file.html#FORCE-TEXT-MODE">force-text-mode</a></dt>
 250                 <dt>8.5.19. <a href="actions-file.html#FORWARD-OVERRIDE">forward-override</a></dt>
 251                 <dt>8.5.20. <a href="actions-file.html#HANDLE-AS-EMPTY-DOCUMENT">handle-as-empty-document</a></dt>
 252                 <dt>8.5.21. <a href="actions-file.html#HANDLE-AS-IMAGE">handle-as-image</a></dt>
 253                 <dt>8.5.22. <a href="actions-file.html#HIDE-ACCEPT-LANGUAGE">hide-accept-language</a></dt>
 254                 <dt>8.5.23. <a href="actions-file.html#HIDE-CONTENT-DISPOSITION">hide-content-disposition</a></dt>
 255                 <dt>8.5.24. <a href="actions-file.html#HIDE-IF-MODIFIED-SINCE">hide-if-modified-since</a></dt>
 256                 <dt>8.5.25. <a href="actions-file.html#HIDE-FROM-HEADER">hide-from-header</a></dt>
 257                 <dt>8.5.26. <a href="actions-file.html#HIDE-REFERRER">hide-referrer</a></dt>
 258                 <dt>8.5.27. <a href="actions-file.html#HIDE-USER-AGENT">hide-user-agent</a></dt>
 259                 <dt>8.5.28. <a href="actions-file.html#HTTPS-INSPECTION">https-inspection</a></dt>
 260                 <dt>8.5.29. <a href="actions-file.html#IGNORE-CERTIFICATE-ERRORS">ignore-certificate-errors</a></dt>
 261                 <dt>8.5.30. <a href="actions-file.html#LIMIT-CONNECT">limit-connect</a></dt>
 262                 <dt>8.5.31. <a href="actions-file.html#LIMIT-COOKIE-LIFETIME">limit-cookie-lifetime</a></dt>
 263                 <dt>8.5.32. <a href="actions-file.html#PREVENT-COMPRESSION">prevent-compression</a></dt>
 264                 <dt>8.5.33. <a href="actions-file.html#OVERWRITE-LAST-MODIFIED">overwrite-last-modified</a></dt>
 265                 <dt>8.5.34. <a href="actions-file.html#REDIRECT">redirect</a></dt>
 266                 <dt>8.5.35. <a href="actions-file.html#SERVER-HEADER-FILTER">server-header-filter</a></dt>
 267                 <dt>8.5.36. <a href="actions-file.html#SERVER-HEADER-TAGGER">server-header-tagger</a></dt>
 268                 <dt>8.5.37. <a href="actions-file.html#SESSION-COOKIES-ONLY">session-cookies-only</a></dt>
 269                 <dt>8.5.38. <a href="actions-file.html#SET-IMAGE-BLOCKER">set-image-blocker</a></dt>
 270                 <dt>8.5.39. <a href="actions-file.html#SUMMARY">Summary</a></dt>
 271               </dl>
 272             </dd>
 273             <dt>8.6. <a href="actions-file.html#ALIASES">Aliases</a></dt>
 274             <dt>8.7. <a href="actions-file.html#ACT-EXAMPLES">Actions Files Tutorial</a></dt>
 275             <dd>
 276               <dl>
 277                 <dt>8.7.1. <a href="actions-file.html#MATCH-ALL">match-all.action</a></dt>
 278                 <dt>8.7.2. <a href="actions-file.html#DEFAULT-ACTION">default.action</a></dt>
 279                 <dt>8.7.3. <a href="actions-file.html#USER-ACTION">user.action</a></dt>
 280               </dl>
 281             </dd>
 282           </dl>
 283         </dd>
 284         <dt>9. <a href="filter-file.html">Filter Files</a></dt>
 285         <dd>
 286           <dl>
 287             <dt>9.1. <a href="filter-file.html#FILTER-FILE-TUT">Filter File Tutorial</a></dt>
 288             <dt>9.2. <a href="filter-file.html#PREDEFINED-FILTERS">The Pre-defined Filters</a></dt>
 289             <dt>9.3. <a href="filter-file.html#EXTERNAL-FILTER-SYNTAX">External filter syntax</a></dt>
 290           </dl>
 291         </dd>
 292         <dt>10. <a href="templates.html">Privoxy's Template Files</a></dt>
 293         <dt>11. <a href="contact.html">Contacting the Developers, Bug Reporting and Feature Requests</a></dt>
 294         <dd>
 295           <dl>
 296             <dt>11.1. <a href="contact.html#SUFFICIENT-INFORMATION">Please provide sufficient information</a></dt>
 297             <dt>11.2. <a href="contact.html#CONTACT-SUPPORT">Get Support</a></dt>
 298             <dt>11.3. <a href="contact.html#REPORTING">Reporting Problems</a></dt>
 299             <dd>
 300               <dl>
 301                 <dt>11.3.1. <a href="contact.html#CONTACT-ADS">Reporting Ads or Other Configuration Problems</a></dt>
 302                 <dt>11.3.2. <a href="contact.html#CONTACT-BUGS">Reporting Bugs</a></dt>
 303               </dl>
 304             </dd>
 305             <dt>11.4. <a href="contact.html#SECURITY-CONTACT">Reporting security problems</a></dt>
 306             <dt>11.5. <a href="contact.html#MAILING-LISTS">Mailing Lists</a></dt>
 307             <dt>11.6. <a href="contact.html#SF-TRACKERS">SourceForge support trackers</a></dt>
 308           </dl>
 309         </dd>
 310         <dt>12. <a href="copyright.html">Privoxy Copyright, License and History</a></dt>
 311         <dd>
 312           <dl>
 313             <dt>12.1. <a href="copyright.html#LICENSE">License</a></dt>
 314             <dt>12.2. <a href="copyright.html#HISTORY">History</a></dt>
 315             <dt>12.3. <a href="copyright.html#AUTHORS">Authors</a></dt>
 316           </dl>
 317         </dd>
 318         <dt>13. <a href="seealso.html">See Also</a></dt>
 319         <dt>14. <a href="appendix.html">Appendix</a></dt>
 320         <dd>
 321           <dl>
 322             <dt>14.1. <a href="appendix.html#REGEX">Regular Expressions</a></dt>
 323             <dt>14.2. <a href="appendix.html#INTERNAL-PAGES">Privoxy's Internal Pages</a></dt>
 324             <dt>14.3. <a href="appendix.html#CHAIN">Chain of Events</a></dt>
 325             <dt>14.4. <a href="appendix.html#ACTIONSANAT">Troubleshooting: Anatomy of an Action</a></dt>
 326           </dl>
 327         </dd>
 328       </dl>
 329     </div>
 330   </div>
 331   <div class="NAVFOOTER">
 332     <hr align="left" width="100%">
 333     <table summary="Footer navigation table" width="100%" border="0" cellpadding="0" cellspacing="0">
 334       <tr>
 335         <td width="33%" align="left" valign="top">&nbsp;</td>
 336         <td width="34%" align="center" valign="top">&nbsp;</td>
 337         <td width="33%" align="right" valign="top"><a href="introduction.html" accesskey="N">Next</a></td>
 338       </tr>
 339       <tr>
 340         <td width="33%" align="left" valign="top">&nbsp;</td>
 341         <td width="34%" align="center" valign="top">&nbsp;</td>
 342         <td width="33%" align="right" valign="top">Introduction</td>
 343       </tr>
 344     </table>
 345   </div>
 346 </body>
 347 </html>