<p>Applications can install add-ons so they can be invoked easily on a selection of files from Tracker. Only the add-ons that can handle a specific filetype are presented under <spanclass="menu">Add-Ons</span> from the context menu or the <spanclass="menu">File</span> menu of a Tracker window. Some add-ons don't necessarily need a file to work on and are thus always present.</p>
<p>Les extensions du Tracker, ou des liens vers des applications qui peuvent agir en tant que add-ons, peuvent être installés dans trois endroits différents (voir le sujet <ahref="filesystem-layout.html">Structure du système de fichiers</a>):</p>
<tr><td><spanclass="path">/boot/system/system/add-ons/Tracker/</span></td><td></td><td> pour les extension fournies par le système.</td></tr>
<tr><td><spanclass="path">/boot/common/add-ons/Tracker/</span></td><td></td><td> Pour les extensions disponibles pour tous les utilisateurs.</td></tr>
<tr><td><spanclass="path">/boot/home/config/add-ons/Tracker/</span></td><td></td><td> pour les extensions seulement disponibles pour vous.</td></tr>
</table>
<p>The file name of an add-on can be suffixed with a dash and capital letter, and is then available via keyboard shortcut. For example, <spanclass="app">Open Target Folder-T</span> opens with <spanclass="key">ALT</span><spanclass="key">OPT</span><spanclass="key">T</span>.<br/>
Of course, you have to take care of possible shortcut collisions when deciding on a shortcut. You can't have the same for different add-ons.</p>
<h2><aid="system-add-ons"name="system-add-ons">Extensions du Tracker Haiku</a></h2>
<p>Ces extensions du Tracker sont livrés avec chaque installation Haiku :</p>
<tdvalign="top">Opens the <ahref="preferences/backgrounds.html">Background</a> preferences to change the color or image of the Desktop or any folder. Invoked on an image file the Background panel is launched with that image already loaded as a potential background.</td></tr>
<tdvalign="top">Invoked on a file, opens its specific <ahref="filetypes.html">FileType</a> panel, otherwise the general FileTypes preferences are launched.</td></tr>
<tdvalign="top">Starts the <ahref="applications/textsearch.html">TextSearch</a> application to look for a string in the selected folder (and its subfolders).</td></tr>
<tdvalign="top">Une sélection de fichiers seront ajoutés à une archive zip. Invoquée sans sélection, un panneau s'ouvre pour créer une archive par glisser&déposé.</td></tr>