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  19       <h1 class="TITLE"><a name="AEN2" id="AEN2">Privoxy 3.0.24 User
  20       Manual</a></h1>
  21
  22       <p class="PUBDATE"><sub><a href="copyright.html">Copyright</a> &copy;
  23       2001-2014 by <a href="http://www.privoxy.org/" target="_top">Privoxy
  24       Developers</a></sub><br></p>
  25
  26       <p class="PUBDATE">$Id: user-manual.sgml,v 2.202 2016/01/23 13:57:17
  27       diem 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           "http://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               "http://www.privoxy.org/faq/general.html#PARTICIPATE" target=
  56               "_top">http://www.privoxy.org/faq/general.html#PARTICIPATE</a></p>
  57             </li>
  58
  59             <li>
  60               <p><a href="http://www.privoxy.org/faq/general.html#DONATE"
  61               target=
  62               "_top">http://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           "http://www.privoxy.org/user-manual/" target=
  69           "_top">http://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="configuration.html#AEN811">Controlling Privoxy
 180             with Your Web Browser</a></dt>
 181
 182             <dt>6.2. <a href="configuration.html#CONFOVERVIEW">Configuration
 183             Files Overview</a></dt>
 184           </dl>
 185         </dd>
 186
 187         <dt>7. <a href="config.html">The Main Configuration File</a></dt>
 188
 189         <dd>
 190           <dl>
 191             <dt>7.1. <a href="config.html#LOCAL-SET-UP">Local Set-up
 192             Documentation</a></dt>
 193
 194             <dd>
 195               <dl>
 196                 <dt>7.1.1. <a href=
 197                 "config.html#USER-MANUAL">user-manual</a></dt>
 198
 199                 <dt>7.1.2. <a href=
 200                 "config.html#TRUST-INFO-URL">trust-info-url</a></dt>
 201
 202                 <dt>7.1.3. <a href=
 203                 "config.html#ADMIN-ADDRESS">admin-address</a></dt>
 204
 205                 <dt>7.1.4. <a href=
 206                 "config.html#PROXY-INFO-URL">proxy-info-url</a></dt>
 207               </dl>
 208             </dd>
 209
 210             <dt>7.2. <a href="config.html#CONF-LOG-LOC">Configuration and Log
 211             File Locations</a></dt>
 212
 213             <dd>
 214               <dl>
 215                 <dt>7.2.1. <a href="config.html#CONFDIR">confdir</a></dt>
 216
 217                 <dt>7.2.2. <a href="config.html#TEMPLDIR">templdir</a></dt>
 218
 219                 <dt>7.2.3. <a href=
 220                 "config.html#TEMPORARY-DIRECTORY">temporary-directory</a></dt>
 221
 222                 <dt>7.2.4. <a href="config.html#LOGDIR">logdir</a></dt>
 223
 224                 <dt>7.2.5. <a href=
 225                 "config.html#ACTIONSFILE">actionsfile</a></dt>
 226
 227                 <dt>7.2.6. <a href=
 228                 "config.html#FILTERFILE">filterfile</a></dt>
 229
 230                 <dt>7.2.7. <a href="config.html#LOGFILE">logfile</a></dt>
 231
 232                 <dt>7.2.8. <a href="config.html#TRUSTFILE">trustfile</a></dt>
 233               </dl>
 234             </dd>
 235
 236             <dt>7.3. <a href="config.html#DEBUGGING">Debugging</a></dt>
 237
 238             <dd>
 239               <dl>
 240                 <dt>7.3.1. <a href="config.html#DEBUG">debug</a></dt>
 241
 242                 <dt>7.3.2. <a href=
 243                 "config.html#SINGLE-THREADED">single-threaded</a></dt>
 244
 245                 <dt>7.3.3. <a href="config.html#HOSTNAME">hostname</a></dt>
 246               </dl>
 247             </dd>
 248
 249             <dt>7.4. <a href="config.html#ACCESS-CONTROL">Access Control and
 250             Security</a></dt>
 251
 252             <dd>
 253               <dl>
 254                 <dt>7.4.1. <a href=
 255                 "config.html#LISTEN-ADDRESS">listen-address</a></dt>
 256
 257                 <dt>7.4.2. <a href="config.html#TOGGLE">toggle</a></dt>
 258
 259                 <dt>7.4.3. <a href=
 260                 "config.html#ENABLE-REMOTE-TOGGLE">enable-remote-toggle</a></dt>
 261
 262                 <dt>7.4.4. <a href=
 263                 "config.html#ENABLE-REMOTE-HTTP-TOGGLE">enable-remote-http-toggle</a></dt>
 264
 265                 <dt>7.4.5. <a href=
 266                 "config.html#ENABLE-EDIT-ACTIONS">enable-edit-actions</a></dt>
 267
 268                 <dt>7.4.6. <a href=
 269                 "config.html#ENFORCE-BLOCKS">enforce-blocks</a></dt>
 270
 271                 <dt>7.4.7. <a href="config.html#ACLS">ACLs: permit-access and
 272                 deny-access</a></dt>
 273
 274                 <dt>7.4.8. <a href=
 275                 "config.html#BUFFER-LIMIT">buffer-limit</a></dt>
 276
 277                 <dt>7.4.9. <a href=
 278                 "config.html#ENABLE-PROXY-AUTHENTICATION-FORWARDING">enable-proxy-authentication-forwarding</a></dt>
 279               </dl>
 280             </dd>
 281
 282             <dt>7.5. <a href="config.html#FORWARDING">Forwarding</a></dt>
 283
 284             <dd>
 285               <dl>
 286                 <dt>7.5.1. <a href="config.html#FORWARD">forward</a></dt>
 287
 288                 <dt>7.5.2. <a href="config.html#SOCKS">forward-socks4,
 289                 forward-socks4a, forward-socks5 and forward-socks5t</a></dt>
 290
 291                 <dt>7.5.3. <a href=
 292                 "config.html#ADVANCED-FORWARDING-EXAMPLES">Advanced
 293                 Forwarding Examples</a></dt>
 294
 295                 <dt>7.5.4. <a href=
 296                 "config.html#FORWARDED-CONNECT-RETRIES">forwarded-connect-retries</a></dt>
 297               </dl>
 298             </dd>
 299
 300             <dt>7.6. <a href="config.html#MISC">Miscellaneous</a></dt>
 301
 302             <dd>
 303               <dl>
 304                 <dt>7.6.1. <a href=
 305                 "config.html#ACCEPT-INTERCEPTED-REQUESTS">accept-intercepted-requests</a></dt>
 306
 307                 <dt>7.6.2. <a href=
 308                 "config.html#ALLOW-CGI-REQUEST-CRUNCHING">allow-cgi-request-crunching</a></dt>
 309
 310                 <dt>7.6.3. <a href=
 311                 "config.html#SPLIT-LARGE-FORMS">split-large-forms</a></dt>
 312
 313                 <dt>7.6.4. <a href=
 314                 "config.html#KEEP-ALIVE-TIMEOUT">keep-alive-timeout</a></dt>
 315
 316                 <dt>7.6.5. <a href=
 317                 "config.html#TOLERATE-PIPELINING">tolerate-pipelining</a></dt>
 318
 319                 <dt>7.6.6. <a href=
 320                 "config.html#DEFAULT-SERVER-TIMEOUT">default-server-timeout</a></dt>
 321
 322                 <dt>7.6.7. <a href=
 323                 "config.html#CONNECTION-SHARING">connection-sharing</a></dt>
 324
 325                 <dt>7.6.8. <a href=
 326                 "config.html#SOCKET-TIMEOUT">socket-timeout</a></dt>
 327
 328                 <dt>7.6.9. <a href=
 329                 "config.html#MAX-CLIENT-CONNECTIONS">max-client-connections</a></dt>
 330
 331                 <dt>7.6.10. <a href=
 332                 "config.html#HANDLE-AS-EMPTY-DOC-RETURNS-OK">handle-as-empty-doc-returns-ok</a></dt>
 333
 334                 <dt>7.6.11. <a href=
 335                 "config.html#ENABLE-COMPRESSION">enable-compression</a></dt>
 336
 337                 <dt>7.6.12. <a href=
 338                 "config.html#COMPRESSION-LEVEL">compression-level</a></dt>
 339
 340                 <dt>7.6.13. <a href=
 341                 "config.html#CLIENT-HEADER-ORDER">client-header-order</a></dt>
 342               </dl>
 343             </dd>
 344
 345             <dt>7.7. <a href="config.html#WINDOWS-GUI">Windows GUI
 346             Options</a></dt>
 347           </dl>
 348         </dd>
 349
 350         <dt>8. <a href="actions-file.html">Actions Files</a></dt>
 351
 352         <dd>
 353           <dl>
 354             <dt>8.1. <a href="actions-file.html#AEN2713">Finding the Right
 355             Mix</a></dt>
 356
 357             <dt>8.2. <a href="actions-file.html#AEN2720">How to Edit</a></dt>
 358
 359             <dt>8.3. <a href="actions-file.html#ACTIONS-APPLY">How Actions
 360             are Applied to Requests</a></dt>
 361
 362             <dt>8.4. <a href=
 363             "actions-file.html#AF-PATTERNS">Patterns</a></dt>
 364
 365             <dd>
 366               <dl>
 367                 <dt>8.4.1. <a href="actions-file.html#HOST-PATTERN">The Host
 368                 Pattern</a></dt>
 369
 370                 <dt>8.4.2. <a href="actions-file.html#AEN2914">The Path
 371                 Pattern</a></dt>
 372
 373                 <dt>8.4.3. <a href="actions-file.html#TAG-PATTERN">The Tag
 374                 Pattern</a></dt>
 375
 376                 <dt>8.4.4. <a href=
 377                 "actions-file.html#NEGATIVE-TAG-PATTERNS">The Negative Tag
 378                 Patterns</a></dt>
 379               </dl>
 380             </dd>
 381
 382             <dt>8.5. <a href="actions-file.html#ACTIONS">Actions</a></dt>
 383
 384             <dd>
 385               <dl>
 386                 <dt>8.5.1. <a href=
 387                 "actions-file.html#ADD-HEADER">add-header</a></dt>
 388
 389                 <dt>8.5.2. <a href="actions-file.html#BLOCK">block</a></dt>
 390
 391                 <dt>8.5.3. <a href=
 392                 "actions-file.html#CHANGE-X-FORWARDED-FOR">change-x-forwarded-for</a></dt>
 393
 394                 <dt>8.5.4. <a href=
 395                 "actions-file.html#CLIENT-HEADER-FILTER">client-header-filter</a></dt>
 396
 397                 <dt>8.5.5. <a href=
 398                 "actions-file.html#CLIENT-HEADER-TAGGER">client-header-tagger</a></dt>
 399
 400                 <dt>8.5.6. <a href=
 401                 "actions-file.html#CONTENT-TYPE-OVERWRITE">content-type-overwrite</a></dt>
 402
 403                 <dt>8.5.7. <a href=
 404                 "actions-file.html#CRUNCH-CLIENT-HEADER">crunch-client-header</a></dt>
 405
 406                 <dt>8.5.8. <a href=
 407                 "actions-file.html#CRUNCH-IF-NONE-MATCH">crunch-if-none-match</a></dt>
 408
 409                 <dt>8.5.9. <a href=
 410                 "actions-file.html#CRUNCH-INCOMING-COOKIES">crunch-incoming-cookies</a></dt>
 411
 412                 <dt>8.5.10. <a href=
 413                 "actions-file.html#CRUNCH-SERVER-HEADER">crunch-server-header</a></dt>
 414
 415                 <dt>8.5.11. <a href=
 416                 "actions-file.html#CRUNCH-OUTGOING-COOKIES">crunch-outgoing-cookies</a></dt>
 417
 418                 <dt>8.5.12. <a href=
 419                 "actions-file.html#DEANIMATE-GIFS">deanimate-gifs</a></dt>
 420
 421                 <dt>8.5.13. <a href=
 422                 "actions-file.html#DOWNGRADE-HTTP-VERSION">downgrade-http-version</a></dt>
 423
 424                 <dt>8.5.14. <a href=
 425                 "actions-file.html#EXTERNAL-FILTER">external-filter</a></dt>
 426
 427                 <dt>8.5.15. <a href=
 428                 "actions-file.html#FAST-REDIRECTS">fast-redirects</a></dt>
 429
 430                 <dt>8.5.16. <a href=
 431                 "actions-file.html#FILTER">filter</a></dt>
 432
 433                 <dt>8.5.17. <a href=
 434                 "actions-file.html#FORCE-TEXT-MODE">force-text-mode</a></dt>
 435
 436                 <dt>8.5.18. <a href=
 437                 "actions-file.html#FORWARD-OVERRIDE">forward-override</a></dt>
 438
 439                 <dt>8.5.19. <a href=
 440                 "actions-file.html#HANDLE-AS-EMPTY-DOCUMENT">handle-as-empty-document</a></dt>
 441
 442                 <dt>8.5.20. <a href=
 443                 "actions-file.html#HANDLE-AS-IMAGE">handle-as-image</a></dt>
 444
 445                 <dt>8.5.21. <a href=
 446                 "actions-file.html#HIDE-ACCEPT-LANGUAGE">hide-accept-language</a></dt>
 447
 448                 <dt>8.5.22. <a href=
 449                 "actions-file.html#HIDE-CONTENT-DISPOSITION">hide-content-disposition</a></dt>
 450
 451                 <dt>8.5.23. <a href=
 452                 "actions-file.html#HIDE-IF-MODIFIED-SINCE">hide-if-modified-since</a></dt>
 453
 454                 <dt>8.5.24. <a href=
 455                 "actions-file.html#HIDE-FROM-HEADER">hide-from-header</a></dt>
 456
 457                 <dt>8.5.25. <a href=
 458                 "actions-file.html#HIDE-REFERRER">hide-referrer</a></dt>
 459
 460                 <dt>8.5.26. <a href=
 461                 "actions-file.html#HIDE-USER-AGENT">hide-user-agent</a></dt>
 462
 463                 <dt>8.5.27. <a href=
 464                 "actions-file.html#LIMIT-CONNECT">limit-connect</a></dt>
 465
 466                 <dt>8.5.28. <a href=
 467                 "actions-file.html#LIMIT-COOKIE-LIFETIME">limit-cookie-lifetime</a></dt>
 468
 469                 <dt>8.5.29. <a href=
 470                 "actions-file.html#PREVENT-COMPRESSION">prevent-compression</a></dt>
 471
 472                 <dt>8.5.30. <a href=
 473                 "actions-file.html#OVERWRITE-LAST-MODIFIED">overwrite-last-modified</a></dt>
 474
 475                 <dt>8.5.31. <a href=
 476                 "actions-file.html#REDIRECT">redirect</a></dt>
 477
 478                 <dt>8.5.32. <a href=
 479                 "actions-file.html#SERVER-HEADER-FILTER">server-header-filter</a></dt>
 480
 481                 <dt>8.5.33. <a href=
 482                 "actions-file.html#SERVER-HEADER-TAGGER">server-header-tagger</a></dt>
 483
 484                 <dt>8.5.34. <a href=
 485                 "actions-file.html#SESSION-COOKIES-ONLY">session-cookies-only</a></dt>
 486
 487                 <dt>8.5.35. <a href=
 488                 "actions-file.html#SET-IMAGE-BLOCKER">set-image-blocker</a></dt>
 489
 490                 <dt>8.5.36. <a href=
 491                 "actions-file.html#AEN4653">Summary</a></dt>
 492               </dl>
 493             </dd>
 494
 495             <dt>8.6. <a href="actions-file.html#ALIASES">Aliases</a></dt>
 496
 497             <dt>8.7. <a href="actions-file.html#ACT-EXAMPLES">Actions Files
 498             Tutorial</a></dt>
 499
 500             <dd>
 501               <dl>
 502                 <dt>8.7.1. <a href=
 503                 "actions-file.html#AEN4717">match-all.action</a></dt>
 504
 505                 <dt>8.7.2. <a href=
 506                 "actions-file.html#AEN4739">default.action</a></dt>
 507
 508                 <dt>8.7.3. <a href=
 509                 "actions-file.html#AEN4852">user.action</a></dt>
 510               </dl>
 511             </dd>
 512           </dl>
 513         </dd>
 514
 515         <dt>9. <a href="filter-file.html">Filter Files</a></dt>
 516
 517         <dd>
 518           <dl>
 519             <dt>9.1. <a href="filter-file.html#AEN5020">Filter File
 520             Tutorial</a></dt>
 521
 522             <dt>9.2. <a href="filter-file.html#PREDEFINED-FILTERS">The
 523             Pre-defined Filters</a></dt>
 524
 525             <dt>9.3. <a href=
 526             "filter-file.html#EXTERNAL-FILTER-SYNTAX">External filter
 527             syntax</a></dt>
 528           </dl>
 529         </dd>
 530
 531         <dt>10. <a href="templates.html">Privoxy's Template Files</a></dt>
 532
 533         <dt>11. <a href="contact.html">Contacting the Developers, Bug
 534         Reporting and Feature Requests</a></dt>
 535
 536         <dd>
 537           <dl>
 538             <dt>11.1. <a href="contact.html#SUFFICIENT-INFORMATION">Please
 539             provide sufficient information</a></dt>
 540
 541             <dt>11.2. <a href="contact.html#CONTACT-SUPPORT">Get
 542             Support</a></dt>
 543
 544             <dt>11.3. <a href="contact.html#REPORTING">Reporting
 545             Problems</a></dt>
 546
 547             <dd>
 548               <dl>
 549                 <dt>11.3.1. <a href="contact.html#CONTACT-ADS">Reporting Ads
 550                 or Other Configuration Problems</a></dt>
 551
 552                 <dt>11.3.2. <a href="contact.html#CONTACT-BUGS">Reporting
 553                 Bugs</a></dt>
 554               </dl>
 555             </dd>
 556
 557             <dt>11.4. <a href="contact.html#SECURITY-CONTACT">Reporting
 558             security problems</a></dt>
 559
 560             <dt>11.5. <a href="contact.html#MAILING-LISTS">Mailing
 561             Lists</a></dt>
 562
 563             <dt>11.6. <a href="contact.html#SF-TRACKERS">SourceForge support
 564             trackers</a></dt>
 565           </dl>
 566         </dd>
 567
 568         <dt>12. <a href="copyright.html">Privoxy Copyright, License and
 569         History</a></dt>
 570
 571         <dd>
 572           <dl>
 573             <dt>12.1. <a href="copyright.html#LICENSE">License</a></dt>
 574
 575             <dt>12.2. <a href="copyright.html#HISTORY">History</a></dt>
 576
 577             <dt>12.3. <a href="copyright.html#AUTHORS">Authors</a></dt>
 578           </dl>
 579         </dd>
 580
 581         <dt>13. <a href="seealso.html">See Also</a></dt>
 582
 583         <dt>14. <a href="appendix.html">Appendix</a></dt>
 584
 585         <dd>
 586           <dl>
 587             <dt>14.1. <a href="appendix.html#REGEX">Regular
 588             Expressions</a></dt>
 589
 590             <dt>14.2. <a href="appendix.html#AEN5759">Privoxy's Internal
 591             Pages</a></dt>
 592
 593             <dt>14.3. <a href="appendix.html#CHAIN">Chain of Events</a></dt>
 594
 595             <dt>14.4. <a href="appendix.html#ACTIONSANAT">Troubleshooting:
 596             Anatomy of an Action</a></dt>
 597           </dl>
 598         </dd>
 599       </dl>
 600     </div>
 601   </div>
 602
 603   <div class="NAVFOOTER">
 604     <hr align="left" width="100%">
 605
 606     <table summary="Footer navigation table" width="100%" border="0"
 607     cellpadding="0" cellspacing="0">
 608       <tr>
 609         <td width="33%" align="left" valign="top">&nbsp;</td>
 610
 611         <td width="34%" align="center" valign="top">&nbsp;</td>
 612
 613         <td width="33%" align="right" valign="top"><a href=
 614         "introduction.html" accesskey="N">Next</a></td>
 615       </tr>
 616
 617       <tr>
 618         <td width="33%" align="left" valign="top">&nbsp;</td>
 619
 620         <td width="34%" align="center" valign="top">&nbsp;</td>
 621
 622         <td width="33%" align="right" valign="top">Introduction</td>
 623       </tr>
 624     </table>
 625   </div>
 626 </body>
 627 </html>