1<?xml version="1.0" encoding="ISO-8859-1"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 3<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!-- 4 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 5 This file is generated from xml source: DO NOT EDIT 6 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 7 --> 8<title>SSL/TLS Strong Encryption: Compatibility - Apache HTTP Server</title> 9<link href="/style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> 10<link href="/style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> 11<link href="/style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="/style/css/prettify.css" /> 12<script src="/style/scripts/prettify.min.js" type="text/javascript"> 13</script> 14 15<link href="/images/favicon.ico" rel="shortcut icon" /></head> 16<body id="manual-page"><div id="page-header"> 17<p class="menu"><a href="/mod/">Modules</a> | <a href="/mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="/glossary.html">Glossary</a> | <a href="/sitemap.html">Sitemap</a></p> 18<p class="apache">Apache HTTP Server Version 2.4</p> 19<img alt="" src="/images/feather.gif" /></div> 20<div class="up"><a href="./"><img title="<-" alt="<-" src="/images/left.gif" /></a></div> 21<div id="path"> 22<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.4</a> > <a href="./">SSL/TLS</a></div><div id="page-content"><div id="preamble"><h1>SSL/TLS Strong Encryption: Compatibility</h1> 23<div class="toplang"> 24<p><span>Available Languages: </span><a href="/en/ssl/ssl_compat.html" title="English"> en </a> | 25<a href="/fr/ssl/ssl_compat.html" hreflang="fr" rel="alternate" title="Fran�ais"> fr </a></p> 26</div> 27 28<p> 29This page covers backwards compatibility between mod_ssl and other 30SSL solutions. mod_ssl is not the only SSL solution for Apache; four 31additional products are (or were) also available: Ben Laurie's freely 32available <a href="http://www.apache-ssl.org/">Apache-SSL</a> (from 33where mod_ssl were originally derived in 1998), Red Hat's commercial 34Secure Web Server (which was based on mod_ssl), Covalent's commercial 35Raven SSL Module (also based on 36mod_ssl) and finally C2Net's (now Red Hat's) commercial product <a href="http://www.redhat.com/explore/stronghold/">Stronghold</a> (based 37on a different evolution branch, named Sioux up to Stronghold 2.x, and 38based on mod_ssl since Stronghold 3.x).</p> 39 40<p> 41mod_ssl mostly provides a superset of the functionality of all the other 42solutions, so it's simple to migrate from one of the older modules to 43mod_ssl. The configuration directives and environment variable names 44used by the older SSL solutions vary from those used in mod_ssl; 45mapping tables are included here to give the equivalents used by mod_ssl.</p> 46</div> 47<div id="quickview"><ul id="toc"><li><img alt="" src="/images/down.gif" /> <a href="#configuration">Configuration Directives</a></li> 48<li><img alt="" src="/images/down.gif" /> <a href="#variables">Environment Variables</a></li> 49<li><img alt="" src="/images/down.gif" /> <a href="#customlog">Custom Log Functions</a></li> 50</ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div> 51<div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 52<div class="section"> 53<h2><a name="configuration" id="configuration">Configuration Directives</a></h2> 54<p>The mapping between configuration directives used by Apache-SSL 551.x and mod_ssl 2.0.x is given in <a href="#table1">Table 561</a>. The mapping from Sioux 1.x and Stronghold 2.x is only partial 57because of special functionality in these interfaces which mod_ssl 58doesn't provide.</p> 59 60 61<h3><a name="table1" id="table1">Table 1: Configuration Directive Mapping</a></h3> 62 63<table><tr class="header"><th>Old Directive</th><th>mod_ssl Directive</th><th>Comment</th></tr> 64<tr class="header"><th colspan="3">Apache-SSL 1.x & mod_ssl 2.0.x compatibility:</th></tr> 65<tr><td><code>SSLEnable</code></td><td><code>SSLEngine on</code></td><td>compactified</td></tr> 66<tr class="odd"><td><code>SSLDisable</code></td><td><code>SSLEngine off</code></td><td>compactified</td></tr> 67<tr><td><code>SSLLogFile</code> <em>file</em></td><td><code /></td><td>Use per-module <code class="directive"><a href="/mod/core.html#loglevel">LogLevel</a></code> setting instead.</td></tr> 68<tr class="odd"><td><code>SSLRequiredCiphers</code> <em>spec</em></td><td><code>SSLCipherSuite</code> <em>spec</em></td><td>renamed</td></tr> 69<tr><td><code>SSLRequireCipher</code> <em>c1</em> ...</td><td><code>SSLRequire %{SSL_CIPHER} in {"</code><em>c1</em><code>", 70...}</code></td><td>generalized</td></tr> 71<tr class="odd"><td><code>SSLBanCipher</code> <em>c1</em> ...</td><td><code>SSLRequire not (%{SSL_CIPHER} in {"</code><em>c1</em><code>", 72...})</code></td><td>generalized</td></tr> 73<tr><td><code>SSLFakeBasicAuth</code></td><td><code>SSLOptions +FakeBasicAuth</code></td><td>merged</td></tr> 74<tr class="odd"><td><code>SSLCacheServerPath</code> <em>dir</em></td><td>-</td><td>functionality removed</td></tr> 75<tr><td><code>SSLCacheServerPort</code> <em>integer</em></td><td>-</td><td>functionality removed</td></tr> 76<tr class="header"><th colspan="3">Apache-SSL 1.x compatibility:</th></tr> 77<tr class="odd"><td><code>SSLExportClientCertificates</code></td><td><code>SSLOptions +ExportCertData</code></td><td>merged</td></tr> 78<tr><td><code>SSLCacheServerRunDir</code> <em>dir</em></td><td>-</td><td>functionality not supported</td></tr> 79<tr class="header"><th colspan="3">Sioux 1.x compatibility:</th></tr> 80<tr class="odd"><td><code>SSL_CertFile</code> <em>file</em></td><td><code>SSLCertificateFile</code> <em>file</em></td><td>renamed</td></tr> 81<tr><td><code>SSL_KeyFile</code> <em>file</em></td><td><code>SSLCertificateKeyFile</code> <em>file</em></td><td>renamed</td></tr> 82<tr class="odd"><td><code>SSL_CipherSuite</code> <em>arg</em></td><td><code>SSLCipherSuite</code> <em>arg</em></td><td>renamed</td></tr> 83<tr><td><code>SSL_X509VerifyDir</code> <em>arg</em></td><td><code>SSLCACertificatePath</code> <em>arg</em></td><td>renamed</td></tr> 84<tr class="odd"><td><code>SSL_Log</code> <em>file</em></td><td><code>-</code></td><td>Use per-module <code class="directive"><a href="/mod/core.html#loglevel">LogLevel</a></code> setting instead.</td></tr> 85<tr><td><code>SSL_Connect</code> <em>flag</em></td><td><code>SSLEngine</code> <em>flag</em></td><td>renamed</td></tr> 86<tr class="odd"><td><code>SSL_ClientAuth</code> <em>arg</em></td><td><code>SSLVerifyClient</code> <em>arg</em></td><td>renamed</td></tr> 87<tr><td><code>SSL_X509VerifyDepth</code> <em>arg</em></td><td><code>SSLVerifyDepth</code> <em>arg</em></td><td>renamed</td></tr> 88<tr class="odd"><td><code>SSL_FetchKeyPhraseFrom</code> <em>arg</em></td><td>-</td><td>not directly mappable; use SSLPassPhraseDialog</td></tr> 89<tr><td><code>SSL_SessionDir</code> <em>dir</em></td><td>-</td><td>not directly mappable; use SSLSessionCache</td></tr> 90<tr class="odd"><td><code>SSL_Require</code> <em>expr</em></td><td>-</td><td>not directly mappable; use SSLRequire</td></tr> 91<tr><td><code>SSL_CertFileType</code> <em>arg</em></td><td>-</td><td>functionality not supported</td></tr> 92<tr class="odd"><td><code>SSL_KeyFileType</code> <em>arg</em></td><td>-</td><td>functionality not supported</td></tr> 93<tr><td><code>SSL_X509VerifyPolicy</code> <em>arg</em></td><td>-</td><td>functionality not supported</td></tr> 94<tr class="odd"><td><code>SSL_LogX509Attributes</code> <em>arg</em></td><td>-</td><td>functionality not supported</td></tr> 95<tr class="header"><th colspan="3">Stronghold 2.x compatibility:</th></tr> 96<tr><td><code>StrongholdAccelerator</code> <em>engine</em></td><td><code>SSLCryptoDevice</code> <em>engine</em></td><td>renamed</td></tr> 97<tr class="odd"><td><code>StrongholdKey</code> <em>dir</em></td><td>-</td><td>functionality not needed</td></tr> 98<tr><td><code>StrongholdLicenseFile</code> <em>dir</em></td><td>-</td><td>functionality not needed</td></tr> 99<tr class="odd"><td><code>SSLFlag</code> <em>flag</em></td><td><code>SSLEngine</code> <em>flag</em></td><td>renamed</td></tr> 100<tr><td><code>SSLSessionLockFile</code> <em>file</em></td><td><code>SSLMutex</code> <em>file</em></td><td>renamed</td></tr> 101<tr class="odd"><td><code>SSLCipherList</code> <em>spec</em></td><td><code>SSLCipherSuite</code> <em>spec</em></td><td>renamed</td></tr> 102<tr><td><code>RequireSSL</code></td><td><code>SSLRequireSSL</code></td><td>renamed</td></tr> 103<tr class="odd"><td><code>SSLErrorFile</code> <em>file</em></td><td>-</td><td>functionality not supported</td></tr> 104<tr><td><code>SSLRoot</code> <em>dir</em></td><td>-</td><td>functionality not supported</td></tr> 105<tr class="odd"><td><code>SSL_CertificateLogDir</code> <em>dir</em></td><td>-</td><td>functionality not supported</td></tr> 106<tr><td><code>AuthCertDir</code> <em>dir</em></td><td>-</td><td>functionality not supported</td></tr> 107<tr class="odd"><td><code>SSL_Group</code> <em>name</em></td><td>-</td><td>functionality not supported</td></tr> 108<tr><td><code>SSLProxyMachineCertPath</code> <em>dir</em></td><td><code>SSLProxyMachineCertificatePath</code> <em>dir</em></td><td>renamed</td></tr> 109<tr class="odd"><td><code>SSLProxyMachineCertFile</code> <em>file</em></td><td><code>SSLProxyMachineCertificateFile</code> <em>file</em></td><td>renamed</td></tr> 110<tr><td><code>SSLProxyCipherList</code> <em>spec</em></td><td><code>SSLProxyCipherSpec</code> <em>spec</em></td><td>renamed</td></tr> 111</table> 112 113</div><div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 114<div class="section"> 115<h2><a name="variables" id="variables">Environment Variables</a></h2> 116 117<p>The mapping between environment variable names used by the older 118SSL solutions and the names used by mod_ssl is given in <a href="#table2">Table 2</a>.</p> 119 120<h3><a name="table2" id="table2">Table 2: Environment Variable Derivation</a></h3> 121 122<table><tr class="header"><th>Old Variable</th><th>mod_ssl Variable</th><th>Comment</th></tr> 123<tr><td><code>SSL_PROTOCOL_VERSION</code></td><td><code>SSL_PROTOCOL</code></td><td>renamed</td></tr> 124<tr class="odd"><td><code>SSLEAY_VERSION</code></td><td><code>SSL_VERSION_LIBRARY</code></td><td>renamed</td></tr> 125<tr><td><code>HTTPS_SECRETKEYSIZE</code></td><td><code>SSL_CIPHER_USEKEYSIZE</code></td><td>renamed</td></tr> 126<tr class="odd"><td><code>HTTPS_KEYSIZE</code></td><td><code>SSL_CIPHER_ALGKEYSIZE</code></td><td>renamed</td></tr> 127<tr><td><code>HTTPS_CIPHER</code></td><td><code>SSL_CIPHER</code></td><td>renamed</td></tr> 128<tr class="odd"><td><code>HTTPS_EXPORT</code></td><td><code>SSL_CIPHER_EXPORT</code></td><td>renamed</td></tr> 129<tr><td><code>SSL_SERVER_KEY_SIZE</code></td><td><code>SSL_CIPHER_ALGKEYSIZE</code></td><td>renamed</td></tr> 130<tr class="odd"><td><code>SSL_SERVER_CERTIFICATE</code></td><td><code>SSL_SERVER_CERT</code></td><td>renamed</td></tr> 131<tr><td><code>SSL_SERVER_CERT_START</code></td><td><code>SSL_SERVER_V_START</code></td><td>renamed</td></tr> 132<tr class="odd"><td><code>SSL_SERVER_CERT_END</code></td><td><code>SSL_SERVER_V_END</code></td><td>renamed</td></tr> 133<tr><td><code>SSL_SERVER_CERT_SERIAL</code></td><td><code>SSL_SERVER_M_SERIAL</code></td><td>renamed</td></tr> 134<tr class="odd"><td><code>SSL_SERVER_SIGNATURE_ALGORITHM</code></td><td><code>SSL_SERVER_A_SIG</code></td><td>renamed</td></tr> 135<tr><td><code>SSL_SERVER_DN</code></td><td><code>SSL_SERVER_S_DN</code></td><td>renamed</td></tr> 136<tr class="odd"><td><code>SSL_SERVER_CN</code></td><td><code>SSL_SERVER_S_DN_CN</code></td><td>renamed</td></tr> 137<tr><td><code>SSL_SERVER_EMAIL</code></td><td><code>SSL_SERVER_S_DN_Email</code></td><td>renamed</td></tr> 138<tr class="odd"><td><code>SSL_SERVER_O</code></td><td><code>SSL_SERVER_S_DN_O</code></td><td>renamed</td></tr> 139<tr><td><code>SSL_SERVER_OU</code></td><td><code>SSL_SERVER_S_DN_OU</code></td><td>renamed</td></tr> 140<tr class="odd"><td><code>SSL_SERVER_C</code></td><td><code>SSL_SERVER_S_DN_C</code></td><td>renamed</td></tr> 141<tr><td><code>SSL_SERVER_SP</code></td><td><code>SSL_SERVER_S_DN_SP</code></td><td>renamed</td></tr> 142<tr class="odd"><td><code>SSL_SERVER_L</code></td><td><code>SSL_SERVER_S_DN_L</code></td><td>renamed</td></tr> 143<tr><td><code>SSL_SERVER_IDN</code></td><td><code>SSL_SERVER_I_DN</code></td><td>renamed</td></tr> 144<tr class="odd"><td><code>SSL_SERVER_ICN</code></td><td><code>SSL_SERVER_I_DN_CN</code></td><td>renamed</td></tr> 145<tr><td><code>SSL_SERVER_IEMAIL</code></td><td><code>SSL_SERVER_I_DN_Email</code></td><td>renamed</td></tr> 146<tr class="odd"><td><code>SSL_SERVER_IO</code></td><td><code>SSL_SERVER_I_DN_O</code></td><td>renamed</td></tr> 147<tr><td><code>SSL_SERVER_IOU</code></td><td><code>SSL_SERVER_I_DN_OU</code></td><td>renamed</td></tr> 148<tr class="odd"><td><code>SSL_SERVER_IC</code></td><td><code>SSL_SERVER_I_DN_C</code></td><td>renamed</td></tr> 149<tr><td><code>SSL_SERVER_ISP</code></td><td><code>SSL_SERVER_I_DN_SP</code></td><td>renamed</td></tr> 150<tr class="odd"><td><code>SSL_SERVER_IL</code></td><td><code>SSL_SERVER_I_DN_L</code></td><td>renamed</td></tr> 151<tr><td><code>SSL_CLIENT_CERTIFICATE</code></td><td><code>SSL_CLIENT_CERT</code></td><td>renamed</td></tr> 152<tr class="odd"><td><code>SSL_CLIENT_CERT_START</code></td><td><code>SSL_CLIENT_V_START</code></td><td>renamed</td></tr> 153<tr><td><code>SSL_CLIENT_CERT_END</code></td><td><code>SSL_CLIENT_V_END</code></td><td>renamed</td></tr> 154<tr class="odd"><td><code>SSL_CLIENT_CERT_SERIAL</code></td><td><code>SSL_CLIENT_M_SERIAL</code></td><td>renamed</td></tr> 155<tr><td><code>SSL_CLIENT_SIGNATURE_ALGORITHM</code></td><td><code>SSL_CLIENT_A_SIG</code></td><td>renamed</td></tr> 156<tr class="odd"><td><code>SSL_CLIENT_DN</code></td><td><code>SSL_CLIENT_S_DN</code></td><td>renamed</td></tr> 157<tr><td><code>SSL_CLIENT_CN</code></td><td><code>SSL_CLIENT_S_DN_CN</code></td><td>renamed</td></tr> 158<tr class="odd"><td><code>SSL_CLIENT_EMAIL</code></td><td><code>SSL_CLIENT_S_DN_Email</code></td><td>renamed</td></tr> 159<tr><td><code>SSL_CLIENT_O</code></td><td><code>SSL_CLIENT_S_DN_O</code></td><td>renamed</td></tr> 160<tr class="odd"><td><code>SSL_CLIENT_OU</code></td><td><code>SSL_CLIENT_S_DN_OU</code></td><td>renamed</td></tr> 161<tr><td><code>SSL_CLIENT_C</code></td><td><code>SSL_CLIENT_S_DN_C</code></td><td>renamed</td></tr> 162<tr class="odd"><td><code>SSL_CLIENT_SP</code></td><td><code>SSL_CLIENT_S_DN_SP</code></td><td>renamed</td></tr> 163<tr><td><code>SSL_CLIENT_L</code></td><td><code>SSL_CLIENT_S_DN_L</code></td><td>renamed</td></tr> 164<tr class="odd"><td><code>SSL_CLIENT_IDN</code></td><td><code>SSL_CLIENT_I_DN</code></td><td>renamed</td></tr> 165<tr><td><code>SSL_CLIENT_ICN</code></td><td><code>SSL_CLIENT_I_DN_CN</code></td><td>renamed</td></tr> 166<tr class="odd"><td><code>SSL_CLIENT_IEMAIL</code></td><td><code>SSL_CLIENT_I_DN_Email</code></td><td>renamed</td></tr> 167<tr><td><code>SSL_CLIENT_IO</code></td><td><code>SSL_CLIENT_I_DN_O</code></td><td>renamed</td></tr> 168<tr class="odd"><td><code>SSL_CLIENT_IOU</code></td><td><code>SSL_CLIENT_I_DN_OU</code></td><td>renamed</td></tr> 169<tr><td><code>SSL_CLIENT_IC</code></td><td><code>SSL_CLIENT_I_DN_C</code></td><td>renamed</td></tr> 170<tr class="odd"><td><code>SSL_CLIENT_ISP</code></td><td><code>SSL_CLIENT_I_DN_SP</code></td><td>renamed</td></tr> 171<tr><td><code>SSL_CLIENT_IL</code></td><td><code>SSL_CLIENT_I_DN_L</code></td><td>renamed</td></tr> 172<tr class="odd"><td><code>SSL_EXPORT</code></td><td><code>SSL_CIPHER_EXPORT</code></td><td>renamed</td></tr> 173<tr><td><code>SSL_KEYSIZE</code></td><td><code>SSL_CIPHER_ALGKEYSIZE</code></td><td>renamed</td></tr> 174<tr class="odd"><td><code>SSL_SECKEYSIZE</code></td><td><code>SSL_CIPHER_USEKEYSIZE</code></td><td>renamed</td></tr> 175<tr><td><code>SSL_SSLEAY_VERSION</code></td><td><code>SSL_VERSION_LIBRARY</code></td><td>renamed</td></tr> 176<tr class="odd"><td><code>SSL_STRONG_CRYPTO</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 177<tr><td><code>SSL_SERVER_KEY_EXP</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 178<tr class="odd"><td><code>SSL_SERVER_KEY_ALGORITHM</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 179<tr><td><code>SSL_SERVER_KEY_SIZE</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 180<tr class="odd"><td><code>SSL_SERVER_SESSIONDIR</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 181<tr><td><code>SSL_SERVER_CERTIFICATELOGDIR</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 182<tr class="odd"><td><code>SSL_SERVER_CERTFILE</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 183<tr><td><code>SSL_SERVER_KEYFILE</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 184<tr class="odd"><td><code>SSL_SERVER_KEYFILETYPE</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 185<tr><td><code>SSL_CLIENT_KEY_EXP</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 186<tr class="odd"><td><code>SSL_CLIENT_KEY_ALGORITHM</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 187<tr><td><code>SSL_CLIENT_KEY_SIZE</code></td><td><code>-</code></td><td>Not supported by mod_ssl</td></tr> 188</table> 189 190</div><div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 191<div class="section"> 192<h2><a name="customlog" id="customlog">Custom Log Functions</a></h2> 193<p> 194When mod_ssl is enabled, additional functions exist for the <a href="/mod/mod_log_config.html#formats">Custom Log Format</a> of 195<code class="module"><a href="/mod/mod_log_config.html">mod_log_config</a></code> as documented in the Reference 196Chapter. Beside the ``<code>%{</code><em>varname</em><code>}x</code>'' 197eXtension format function which can be used to expand any variables provided 198by any module, an additional Cryptography 199``<code>%{</code><em>name</em><code>}c</code>'' cryptography format function 200exists for backward compatibility. The currently implemented function calls 201are listed in <a href="#table3">Table 3</a>.</p> 202 203<h3><a name="table3" id="table3">Table 3: Custom Log Cryptography Function</a></h3> 204 205<table> 206 207<tr><th>Function Call</th><th>Description</th></tr> 208 209<tr><td><code>%...{version}c</code></td> <td>SSL protocol version</td></tr> 210<tr><td><code>%...{cipher}c</code></td> <td>SSL cipher</td></tr> 211<tr><td><code>%...{subjectdn}c</code></td> <td>Client Certificate Subject Distinguished Name</td></tr> 212<tr><td><code>%...{issuerdn}c</code></td> <td>Client Certificate Issuer Distinguished Name</td></tr> 213<tr><td><code>%...{errcode}c</code></td> <td>Certificate Verification Error (numerical)</td></tr> 214 215<tr><td><code>%...{errstr}c</code></td> <td>Certificate Verification Error (string)</td></tr> 216</table> 217 218</div></div> 219<div class="bottomlang"> 220<p><span>Available Languages: </span><a href="/en/ssl/ssl_compat.html" title="English"> en </a> | 221<a href="/fr/ssl/ssl_compat.html" hreflang="fr" rel="alternate" title="Fran�ais"> fr </a></p> 222</div><div class="top"><a href="#page-header"><img src="/images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. 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