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+<chapter id="external_tools">
+<title>External tools</title>
+
+<para>You can easily extend &kappname; by defining external tools. These tools
+ are accessible from the contextual popup menu which appears when
+ right-clicking on a thumbnail or in the image view. Look in the
+ <menuchoice><guimenu>External Tools</guimenu></menuchoice> entry.</para>
+
+<para>&kappname; comes with a few predefined external tools, but it's very
+ easy to add more through the <guilabel>Configure External Tools</guilabel> dialog. You can open
+ it from <menuchoice><guimenu>Settings</guimenu><guimenuitem>Configure
+ External Tools...</guimenuitem></menuchoice>.
+</para>
+
+<para>Here is how it looks:
+
+<screenshot>
+ <screeninfo>External tools dialog</screeninfo>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="external_tools_dialog.png" format="PNG" />
+ </imageobject>
+ </mediaobject>
+</screenshot>
+</para>
+
+<para>In this example, I defined an external tool which will call Exiftran to
+ regenerate the EXIF tags for JPEG images. Here is a more detailed description
+ of its definition:</para>
+
+<itemizedlist>
+ <listitem>
+ <para>The <guilabel>Name:</guilabel> field contains the description of your
+ tool, has it will appear in the menu.
+ </para>
+ </listitem>
+ <listitem>
+ <para>The <guilabel>Command:</guilabel> field contains the command which
+ will be run when this tool is invoked.
+ Click on the little question mark on the right of the field to get a list
+ of the keywords you can use in this field. These keywords will get
+ expanded to the image files.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ The button on the right lets you associate an icon with your tool.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ The <guilabel>File Associations</guilabel> group indicates what type of
+ files this tool can work with. Your tool will only appear in the
+ <menuchoice><guimenu>External Tools</guimenu></menuchoice> menu if the
+ selected files are of the correct type. In my example, this tool is only
+ valid with JPEG images, so I choose <guilabel>Custom:</guilabel>, then
+ <guilabel>image/jpeg</guilabel> and <guilabel>image/pjpeg</guilabel>.
+ </para>
+ </listitem>
+</itemizedlist>
+
+<tip>
+ <para>You can find other external tool examples from
+ <ulink url="http://gwenview.sourceforge.net/tools">&kappname; web site</ulink>.
+ </para>
+</tip>
+
+</chapter>