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53 <h1 class="SECT1"><a name="TEMPLATES" id="TEMPLATES">10. Privoxy's
54 Template Files</a></h1>
56 <p>All <span class="APPLICATION">Privoxy</span> built-in pages, i.e.
57 error pages such as the <a href="http://show-the-404-error.page" target=
58 "_top"><span class="QUOTE">"404 - No Such Domain"</span> error page</a>,
59 the <a href="http://ads.bannerserver.example.com/nasty-ads/sponsor.html"
60 target="_top"><span class="QUOTE">"BLOCKED"</span> page</a> and all pages
61 of its <a href="http://config.privoxy.org/" target="_top">web-based user
62 interface</a>, are generated from <span class=
63 "emphasis EMPHASIS c2">templates</span>. (<span class=
64 "APPLICATION">Privoxy</span> must be running for the above links to work
67 <p>These templates are stored in a subdirectory of the <a href=
68 "config.html#CONFDIR">configuration directory</a> called <tt class=
69 "FILENAME">templates</tt>. On Unixish platforms, this is typically
70 <a href="file:///etc/privoxy/templates/" target="_top"><tt class=
71 "FILENAME">/etc/privoxy/templates/</tt></a>.</p>
73 <p>The templates are basically normal HTML files, but with place-holders
74 (called symbols or exports), which <span class=
75 "APPLICATION">Privoxy</span> fills at run time. It is possible to edit
76 the templates with a normal text editor, should you want to customize
77 them. (<span class="emphasis EMPHASIS c2">Not recommended for the casual
78 user</span>). Should you create your own custom templates, you should use
79 the <tt class="FILENAME">config</tt> setting <a href=
80 "config.html#TEMPLDIR">templdir</a> to specify an alternate location, so
81 your templates do not get overwritten during upgrades.</p>
83 <p>Note that just like in configuration files, lines starting with
84 <tt class="LITERAL">#</tt> are ignored when the templates are filled
87 <p>The place-holders are of the form <tt class="LITERAL">@name@</tt>, and
88 you will find a list of available symbols, which vary from template to
89 template, in the comments at the start of each file. Note that these
90 comments are not always accurate, and that it's probably best to look at
91 the existing HTML code to find out which symbols are supported and what
92 they are filled in with.</p>
94 <p>A special application of this substitution mechanism is to make whole
95 blocks of HTML code disappear when a specific symbol is set. We use this
96 for many purposes, one of them being to include the beta warning in all
97 our user interface (CGI) pages when <span class=
98 "APPLICATION">Privoxy</span> is in an alpha or beta development
101 <table class="c3" border="0" width="100%">
105 <!-- @if-unstable-start -->
107 ... beta warning HTML code goes here ...
109 <!-- if-unstable-end@ -->
115 <p>If the "unstable" symbol is set, everything in between and including
116 <tt class="LITERAL">@if-unstable-start</tt> and <tt class=
117 "LITERAL">if-unstable-end@</tt> will disappear, leaving nothing but an
120 <table class="c3" border="0" width="100%">
130 <p>There's also an if-then-else construct and an <tt class=
131 "LITERAL">#include</tt> mechanism, but you'll sure find out if you are
132 inclined to edit the templates ;-)</p>
134 <p>All templates refer to a style located at <a href=
135 "http://config.privoxy.org/send-stylesheet" target="_top"><tt class=
136 "LITERAL">http://config.privoxy.org/send-stylesheet</tt></a>. This is, of
137 course, locally served by <span class="APPLICATION">Privoxy</span> and
138 the source for it can be found and edited in the <tt class=
139 "FILENAME">cgi-style.css</tt> template.</p>
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