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  18     <div class="TITLEPAGE">
  19       <h1 class="TITLE"><a name="AEN2" id="AEN2">Privoxy 3.0.21 User
  20       Manual</a></h1>
  21
  22       <p class="PUBDATE"><sub><a href="copyright.html">Copyright</a> &copy;
  23       2001-2013 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 2.174 2013/03/02 14:39:24
  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           "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-WINDOWS">Windows</a></dt>
 159
 160             <dt>5.3. <a href="startup.html#START-UNICES">Solaris, NetBSD,
 161             FreeBSD, HP-UX and others</a></dt>
 162
 163             <dt>5.4. <a href="startup.html#START-OS2">OS/2</a></dt>
 164
 165             <dt>5.5. <a href="startup.html#START-MACOSX">Mac OS X</a></dt>
 166
 167             <dt>5.6. <a href="startup.html#CMDOPTIONS">Command Line
 168             Options</a></dt>
 169           </dl>
 170         </dd>
 171
 172         <dt>6. <a href="configuration.html">Privoxy Configuration</a></dt>
 173
 174         <dd>
 175           <dl>
 176             <dt>6.1. <a href="configuration.html#AEN1078">Controlling Privoxy
 177             with Your Web Browser</a></dt>
 178
 179             <dt>6.2. <a href="configuration.html#CONFOVERVIEW">Configuration
 180             Files Overview</a></dt>
 181           </dl>
 182         </dd>
 183
 184         <dt>7. <a href="config.html">The Main Configuration File</a></dt>
 185
 186         <dd>
 187           <dl>
 188             <dt>7.1. <a href="config.html#LOCAL-SET-UP">Local Set-up
 189             Documentation</a></dt>
 190
 191             <dd>
 192               <dl>
 193                 <dt>7.1.1. <a href=
 194                 "config.html#USER-MANUAL">user-manual</a></dt>
 195
 196                 <dt>7.1.2. <a href=
 197                 "config.html#TRUST-INFO-URL">trust-info-url</a></dt>
 198
 199                 <dt>7.1.3. <a href=
 200                 "config.html#ADMIN-ADDRESS">admin-address</a></dt>
 201
 202                 <dt>7.1.4. <a href=
 203                 "config.html#PROXY-INFO-URL">proxy-info-url</a></dt>
 204               </dl>
 205             </dd>
 206
 207             <dt>7.2. <a href="config.html#CONF-LOG-LOC">Configuration and Log
 208             File Locations</a></dt>
 209
 210             <dd>
 211               <dl>
 212                 <dt>7.2.1. <a href="config.html#CONFDIR">confdir</a></dt>
 213
 214                 <dt>7.2.2. <a href="config.html#TEMPLDIR">templdir</a></dt>
 215
 216                 <dt>7.2.3. <a href="config.html#LOGDIR">logdir</a></dt>
 217
 218                 <dt>7.2.4. <a href=
 219                 "config.html#ACTIONSFILE">actionsfile</a></dt>
 220
 221                 <dt>7.2.5. <a href=
 222                 "config.html#FILTERFILE">filterfile</a></dt>
 223
 224                 <dt>7.2.6. <a href="config.html#LOGFILE">logfile</a></dt>
 225
 226                 <dt>7.2.7. <a href="config.html#TRUSTFILE">trustfile</a></dt>
 227               </dl>
 228             </dd>
 229
 230             <dt>7.3. <a href="config.html#DEBUGGING">Debugging</a></dt>
 231
 232             <dd>
 233               <dl>
 234                 <dt>7.3.1. <a href="config.html#DEBUG">debug</a></dt>
 235
 236                 <dt>7.3.2. <a href=
 237                 "config.html#SINGLE-THREADED">single-threaded</a></dt>
 238
 239                 <dt>7.3.3. <a href="config.html#HOSTNAME">hostname</a></dt>
 240               </dl>
 241             </dd>
 242
 243             <dt>7.4. <a href="config.html#ACCESS-CONTROL">Access Control and
 244             Security</a></dt>
 245
 246             <dd>
 247               <dl>
 248                 <dt>7.4.1. <a href=
 249                 "config.html#LISTEN-ADDRESS">listen-address</a></dt>
 250
 251                 <dt>7.4.2. <a href="config.html#TOGGLE">toggle</a></dt>
 252
 253                 <dt>7.4.3. <a href=
 254                 "config.html#ENABLE-REMOTE-TOGGLE">enable-remote-toggle</a></dt>
 255
 256                 <dt>7.4.4. <a href=
 257                 "config.html#ENABLE-REMOTE-HTTP-TOGGLE">enable-remote-http-toggle</a></dt>
 258
 259                 <dt>7.4.5. <a href=
 260                 "config.html#ENABLE-EDIT-ACTIONS">enable-edit-actions</a></dt>
 261
 262                 <dt>7.4.6. <a href=
 263                 "config.html#ENFORCE-BLOCKS">enforce-blocks</a></dt>
 264
 265                 <dt>7.4.7. <a href="config.html#ACLS">ACLs: permit-access and
 266                 deny-access</a></dt>
 267
 268                 <dt>7.4.8. <a href=
 269                 "config.html#BUFFER-LIMIT">buffer-limit</a></dt>
 270
 271                 <dt>7.4.9. <a href=
 272                 "config.html#ENABLE-PROXY-AUTHENTICATION-FORWARDING">enable-proxy-authentication-forwarding</a></dt>
 273               </dl>
 274             </dd>
 275
 276             <dt>7.5. <a href="config.html#FORWARDING">Forwarding</a></dt>
 277
 278             <dd>
 279               <dl>
 280                 <dt>7.5.1. <a href="config.html#FORWARD">forward</a></dt>
 281
 282                 <dt>7.5.2. <a href="config.html#SOCKS">forward-socks4,
 283                 forward-socks4a, forward-socks5 and forward-socks5t</a></dt>
 284
 285                 <dt>7.5.3. <a href=
 286                 "config.html#ADVANCED-FORWARDING-EXAMPLES">Advanced
 287                 Forwarding Examples</a></dt>
 288
 289                 <dt>7.5.4. <a href=
 290                 "config.html#FORWARDED-CONNECT-RETRIES">forwarded-connect-retries</a></dt>
 291               </dl>
 292             </dd>
 293
 294             <dt>7.6. <a href="config.html#MISC">Miscellaneous</a></dt>
 295
 296             <dd>
 297               <dl>
 298                 <dt>7.6.1. <a href=
 299                 "config.html#ACCEPT-INTERCEPTED-REQUESTS">accept-intercepted-requests</a></dt>
 300
 301                 <dt>7.6.2. <a href=
 302                 "config.html#ALLOW-CGI-REQUEST-CRUNCHING">allow-cgi-request-crunching</a></dt>
 303
 304                 <dt>7.6.3. <a href=
 305                 "config.html#SPLIT-LARGE-FORMS">split-large-forms</a></dt>
 306
 307                 <dt>7.6.4. <a href=
 308                 "config.html#KEEP-ALIVE-TIMEOUT">keep-alive-timeout</a></dt>
 309
 310                 <dt>7.6.5. <a href=
 311                 "config.html#TOLERATE-PIPELINING">tolerate-pipelining</a></dt>
 312
 313                 <dt>7.6.6. <a href=
 314                 "config.html#DEFAULT-SERVER-TIMEOUT">default-server-timeout</a></dt>
 315
 316                 <dt>7.6.7. <a href=
 317                 "config.html#CONNECTION-SHARING">connection-sharing</a></dt>
 318
 319                 <dt>7.6.8. <a href=
 320                 "config.html#SOCKET-TIMEOUT">socket-timeout</a></dt>
 321
 322                 <dt>7.6.9. <a href=
 323                 "config.html#MAX-CLIENT-CONNECTIONS">max-client-connections</a></dt>
 324
 325                 <dt>7.6.10. <a href=
 326                 "config.html#HANDLE-AS-EMPTY-DOC-RETURNS-OK">handle-as-empty-doc-returns-ok</a></dt>
 327
 328                 <dt>7.6.11. <a href=
 329                 "config.html#ENABLE-COMPRESSION">enable-compression</a></dt>
 330
 331                 <dt>7.6.12. <a href=
 332                 "config.html#COMPRESSION-LEVEL">compression-level</a></dt>
 333
 334                 <dt>7.6.13. <a href=
 335                 "config.html#CLIENT-HEADER-ORDER">client-header-order</a></dt>
 336               </dl>
 337             </dd>
 338
 339             <dt>7.7. <a href="config.html#WINDOWS-GUI">Windows GUI
 340             Options</a></dt>
 341           </dl>
 342         </dd>
 343
 344         <dt>8. <a href="actions-file.html">Actions Files</a></dt>
 345
 346         <dd>
 347           <dl>
 348             <dt>8.1. <a href="actions-file.html#AEN2957">Finding the Right
 349             Mix</a></dt>
 350
 351             <dt>8.2. <a href="actions-file.html#AEN2964">How to Edit</a></dt>
 352
 353             <dt>8.3. <a href="actions-file.html#ACTIONS-APPLY">How Actions
 354             are Applied to Requests</a></dt>
 355
 356             <dt>8.4. <a href=
 357             "actions-file.html#AF-PATTERNS">Patterns</a></dt>
 358
 359             <dd>
 360               <dl>
 361                 <dt>8.4.1. <a href="actions-file.html#AEN3076">The Domain
 362                 Pattern</a></dt>
 363
 364                 <dt>8.4.2. <a href="actions-file.html#AEN3152">The Path
 365                 Pattern</a></dt>
 366
 367                 <dt>8.4.3. <a href="actions-file.html#TAG-PATTERN">The Tag
 368                 Pattern</a></dt>
 369               </dl>
 370             </dd>
 371
 372             <dt>8.5. <a href="actions-file.html#ACTIONS">Actions</a></dt>
 373
 374             <dd>
 375               <dl>
 376                 <dt>8.5.1. <a href=
 377                 "actions-file.html#ADD-HEADER">add-header</a></dt>
 378
 379                 <dt>8.5.2. <a href="actions-file.html#BLOCK">block</a></dt>
 380
 381                 <dt>8.5.3. <a href=
 382                 "actions-file.html#CHANGE-X-FORWARDED-FOR">change-x-forwarded-for</a></dt>
 383
 384                 <dt>8.5.4. <a href=
 385                 "actions-file.html#CLIENT-HEADER-FILTER">client-header-filter</a></dt>
 386
 387                 <dt>8.5.5. <a href=
 388                 "actions-file.html#CLIENT-HEADER-TAGGER">client-header-tagger</a></dt>
 389
 390                 <dt>8.5.6. <a href=
 391                 "actions-file.html#CONTENT-TYPE-OVERWRITE">content-type-overwrite</a></dt>
 392
 393                 <dt>8.5.7. <a href=
 394                 "actions-file.html#CRUNCH-CLIENT-HEADER">crunch-client-header</a></dt>
 395
 396                 <dt>8.5.8. <a href=
 397                 "actions-file.html#CRUNCH-IF-NONE-MATCH">crunch-if-none-match</a></dt>
 398
 399                 <dt>8.5.9. <a href=
 400                 "actions-file.html#CRUNCH-INCOMING-COOKIES">crunch-incoming-cookies</a></dt>
 401
 402                 <dt>8.5.10. <a href=
 403                 "actions-file.html#CRUNCH-SERVER-HEADER">crunch-server-header</a></dt>
 404
 405                 <dt>8.5.11. <a href=
 406                 "actions-file.html#CRUNCH-OUTGOING-COOKIES">crunch-outgoing-cookies</a></dt>
 407
 408                 <dt>8.5.12. <a href=
 409                 "actions-file.html#DEANIMATE-GIFS">deanimate-gifs</a></dt>
 410
 411                 <dt>8.5.13. <a href=
 412                 "actions-file.html#DOWNGRADE-HTTP-VERSION">downgrade-http-version</a></dt>
 413
 414                 <dt>8.5.14. <a href=
 415                 "actions-file.html#FAST-REDIRECTS">fast-redirects</a></dt>
 416
 417                 <dt>8.5.15. <a href=
 418                 "actions-file.html#FILTER">filter</a></dt>
 419
 420                 <dt>8.5.16. <a href=
 421                 "actions-file.html#FORCE-TEXT-MODE">force-text-mode</a></dt>
 422
 423                 <dt>8.5.17. <a href=
 424                 "actions-file.html#FORWARD-OVERRIDE">forward-override</a></dt>
 425
 426                 <dt>8.5.18. <a href=
 427                 "actions-file.html#HANDLE-AS-EMPTY-DOCUMENT">handle-as-empty-document</a></dt>
 428
 429                 <dt>8.5.19. <a href=
 430                 "actions-file.html#HANDLE-AS-IMAGE">handle-as-image</a></dt>
 431
 432                 <dt>8.5.20. <a href=
 433                 "actions-file.html#HIDE-ACCEPT-LANGUAGE">hide-accept-language</a></dt>
 434
 435                 <dt>8.5.21. <a href=
 436                 "actions-file.html#HIDE-CONTENT-DISPOSITION">hide-content-disposition</a></dt>
 437
 438                 <dt>8.5.22. <a href=
 439                 "actions-file.html#HIDE-IF-MODIFIED-SINCE">hide-if-modified-since</a></dt>
 440
 441                 <dt>8.5.23. <a href=
 442                 "actions-file.html#HIDE-FROM-HEADER">hide-from-header</a></dt>
 443
 444                 <dt>8.5.24. <a href=
 445                 "actions-file.html#HIDE-REFERRER">hide-referrer</a></dt>
 446
 447                 <dt>8.5.25. <a href=
 448                 "actions-file.html#HIDE-USER-AGENT">hide-user-agent</a></dt>
 449
 450                 <dt>8.5.26. <a href=
 451                 "actions-file.html#LIMIT-CONNECT">limit-connect</a></dt>
 452
 453                 <dt>8.5.27. <a href=
 454                 "actions-file.html#LIMIT-COOKIE-LIFETIME">limit-cookie-lifetime</a></dt>
 455
 456                 <dt>8.5.28. <a href=
 457                 "actions-file.html#PREVENT-COMPRESSION">prevent-compression</a></dt>
 458
 459                 <dt>8.5.29. <a href=
 460                 "actions-file.html#OVERWRITE-LAST-MODIFIED">overwrite-last-modified</a></dt>
 461
 462                 <dt>8.5.30. <a href=
 463                 "actions-file.html#REDIRECT">redirect</a></dt>
 464
 465                 <dt>8.5.31. <a href=
 466                 "actions-file.html#SERVER-HEADER-FILTER">server-header-filter</a></dt>
 467
 468                 <dt>8.5.32. <a href=
 469                 "actions-file.html#SERVER-HEADER-TAGGER">server-header-tagger</a></dt>
 470
 471                 <dt>8.5.33. <a href=
 472                 "actions-file.html#SESSION-COOKIES-ONLY">session-cookies-only</a></dt>
 473
 474                 <dt>8.5.34. <a href=
 475                 "actions-file.html#SET-IMAGE-BLOCKER">set-image-blocker</a></dt>
 476
 477                 <dt>8.5.35. <a href=
 478                 "actions-file.html#AEN4827">Summary</a></dt>
 479               </dl>
 480             </dd>
 481
 482             <dt>8.6. <a href="actions-file.html#ALIASES">Aliases</a></dt>
 483
 484             <dt>8.7. <a href="actions-file.html#ACT-EXAMPLES">Actions Files
 485             Tutorial</a></dt>
 486
 487             <dd>
 488               <dl>
 489                 <dt>8.7.1. <a href=
 490                 "actions-file.html#AEN4891">match-all.action</a></dt>
 491
 492                 <dt>8.7.2. <a href=
 493                 "actions-file.html#AEN4913">default.action</a></dt>
 494
 495                 <dt>8.7.3. <a href=
 496                 "actions-file.html#AEN5026">user.action</a></dt>
 497               </dl>
 498             </dd>
 499           </dl>
 500         </dd>
 501
 502         <dt>9. <a href="filter-file.html">Filter Files</a></dt>
 503
 504         <dd>
 505           <dl>
 506             <dt>9.1. <a href="filter-file.html#AEN5181">Filter File
 507             Tutorial</a></dt>
 508
 509             <dt>9.2. <a href="filter-file.html#PREDEFINED-FILTERS">The
 510             Pre-defined Filters</a></dt>
 511           </dl>
 512         </dd>
 513
 514         <dt>10. <a href="templates.html">Privoxy's Template Files</a></dt>
 515
 516         <dt>11. <a href="contact.html">Contacting the Developers, Bug
 517         Reporting and Feature Requests</a></dt>
 518
 519         <dd>
 520           <dl>
 521             <dt>11.1. <a href="contact.html#SUFFICIENT-INFORMATION">Please
 522             provide sufficient information</a></dt>
 523
 524             <dt>11.2. <a href="contact.html#CONTACT-SUPPORT">Get
 525             Support</a></dt>
 526
 527             <dt>11.3. <a href="contact.html#REPORTING">Reporting
 528             Problems</a></dt>
 529
 530             <dd>
 531               <dl>
 532                 <dt>11.3.1. <a href="contact.html#CONTACT-ADS">Reporting Ads
 533                 or Other Configuration Problems</a></dt>
 534
 535                 <dt>11.3.2. <a href="contact.html#CONTACT-BUGS">Reporting
 536                 Bugs</a></dt>
 537               </dl>
 538             </dd>
 539
 540             <dt>11.4. <a href="contact.html#CONTACT-FEATURE">Request New
 541             Features</a></dt>
 542
 543             <dt>11.5. <a href="contact.html#MAILING-LISTS">Mailing
 544             Lists</a></dt>
 545           </dl>
 546         </dd>
 547
 548         <dt>12. <a href="copyright.html">Privoxy Copyright, License and
 549         History</a></dt>
 550
 551         <dd>
 552           <dl>
 553             <dt>12.1. <a href="copyright.html#LICENSE">License</a></dt>
 554
 555             <dt>12.2. <a href="copyright.html#HISTORY">History</a></dt>
 556
 557             <dt>12.3. <a href="copyright.html#AUTHORS">Authors</a></dt>
 558           </dl>
 559         </dd>
 560
 561         <dt>13. <a href="seealso.html">See Also</a></dt>
 562
 563         <dt>14. <a href="appendix.html">Appendix</a></dt>
 564
 565         <dd>
 566           <dl>
 567             <dt>14.1. <a href="appendix.html#REGEX">Regular
 568             Expressions</a></dt>
 569
 570             <dt>14.2. <a href="appendix.html#AEN5902">Privoxy's Internal
 571             Pages</a></dt>
 572
 573             <dd>
 574               <dl>
 575                 <dt>14.2.1. <a href=
 576                 "appendix.html#BOOKMARKLETS">Bookmarklets</a></dt>
 577               </dl>
 578             </dd>
 579
 580             <dt>14.3. <a href="appendix.html#CHAIN">Chain of Events</a></dt>
 581
 582             <dt>14.4. <a href="appendix.html#ACTIONSANAT">Troubleshooting:
 583             Anatomy of an Action</a></dt>
 584           </dl>
 585         </dd>
 586       </dl>
 587     </div>
 588   </div>
 589
 590   <div class="NAVFOOTER">
 591     <hr align="left" width="100%">
 592
 593     <table summary="Footer navigation table" width="100%" border="0"
 594     cellpadding="0" cellspacing="0">
 595       <tr>
 596         <td width="33%" align="left" valign="top">&nbsp;</td>
 597
 598         <td width="34%" align="center" valign="top">&nbsp;</td>
 599
 600         <td width="33%" align="right" valign="top"><a href=
 601         "introduction.html" accesskey="N">Next</a></td>
 602       </tr>
 603
 604       <tr>
 605         <td width="33%" align="left" valign="top">&nbsp;</td>
 606
 607         <td width="34%" align="center" valign="top">&nbsp;</td>
 608
 609         <td width="33%" align="right" valign="top">Introduction</td>
 610       </tr>
 611     </table>
 612   </div>
 613 </body>
 614 </html>