<othercredit role="translator"><firstname>Jonathan</firstname><surname>Riddell</surname><affiliation><address><email>kde-en-gb@jriddell.org</email></address></affiliation><contrib>Conversion to British English</contrib></othercredit>
<note><para>At the time of writing, for most installations of &kde; the entire search engine function in &khelpcenter; is disabled, and settings made in this &kcontrol; module will have no effect. We hope to have it back in a future release.</para></note>
<para>&kde; comes with a lot of documentation for applications and components. While it is possible to just browse the manuals until you find that piece of information you're looking for, this may be a very time-consuming task. To make this easier for you, &kde; offers fulltext search using a program called <application>ht://dig</application>. It works quite similar to search engines on the web, in fact some search engines you now might even use it. Just click on the <guilabel>Search</guilabel> tab in the &khelpcenter;, enter the word you are looking for, click <guibutton>Search</guibutton> and enjoy!</para>
<para>However, to make use of this feature, <application>ht://dig</application> has to be installed on your system and &kde; has to be configured to make us of it. This control module tries to help you doing the latter. If you haven't installed <application>ht://dig</application> and it wasn't shipped with your operating system you have to get ht://dig yourself. Have a look at <ulink url="http://www.htdig.org">the ht://dig homepage</ulink> on how to download and install it.</para>
<para>When you first start, you are in display mode only. To modify your settings, click on <guibutton>Administrator Mode</guibutton>. If you are logged in as <systemitem class="username">root</systemitem>, you will go straight to the change dialogue. If not, &kde; will ask for a superuser password.</para>
<sect2 id="help-index-use">
<title>Use</title>
<para>There are two important things to tell &kde; so it can make use of the fulltext search engine:</para>
<para>There are three programs &kde; needs that come with <application>ht://dig</application>: <command>htdig</command>, <command>htsearch</command> and <command>htmerge</command>. For each program you have to provide the full path including the program name, for example: <filename class="directory">/usr/bin/htdig</filename>.</para>
<para>Where exactly these programs are installed depends on your operating system or your distribution. However, there are some good guesses you might want to try:</para>
<listitem><para><command>htdig</command> and <command>htmerge</command> are often found in <filename class="directory">/usr/bin/</filename> or in something like <filename class="directory">/usr/local/www/htdig/bin/</filename>.</para></listitem>
<listitem><para>the <command>htsearch</command> command is often found in a sub folder called <filename class="directory">cgi-bin</filename>, for example <filename class="directory">/usr/local/httpd/cgi-bin/</filename>.</para>
<tip><para>To find out where for example <command>htdig</command> is installed you can always type <command>whereis htdig</command> on the console. <command>whereis</command> will look for the specified command in the standard execution path folders. However, folders like <filename class="directory">cgi-bin</filename> are often not in the standard execution path.</para></tip>
<para>In this section you can choose which help resources should be indexed, &ie; made available to the search engine.</para>
<para>In the <guilabel>Scope</guilabel> frame you can select some typical resources you want to be indexed, &ie; the &kde; help files, and the information offered by the <command>man</command> and <command>info</command> commands. Note that some of those may still be disabled, which means that support for them has not been added yet.</para>
<para>Maybe you have additional files you want to access using the &khelpcenter; fulltext search feature. For example, you might have an <acronym>HTML</acronym> reference installed in <filename>/home/jdoe/docs/selfhtml</filename>. By adding this path to the list of additional search paths you make this documentation available to &khelpcenter;'s fulltext search, too. Just click on the <guibutton>Add</guibutton> button and a file dialogue will ask you for an additional search folder. Select <filename class="directory">/home/jdoe/docs/selfhtml</filename> and click <guibutton>OK</guibutton>. To remove an additional search path, just select it and click <guibutton>Delete</guibutton>.</para>
<important><para>Your changes to the scope and additional search paths will not take effect if you don't click on the <guibutton>Build index</guibutton> button.</para></important>
