 <li><code>remove &lt;name&gt; &lt;categories&gt;</code> - Removes the given categories from this name, but leaves
            the name</li>
        <li><code>change &lt;name&gt; &lt;categoriesModification&gt;</code> - Prepend categories with <code>+</code>,
            <code>-</code> or <code>!</code> to add, remove or toggle the categories respectively. You can specify more than
            one set of categories, for example: <code>change test +a,b -c !d</code> adds a and b, removes c and toggles d</li>
 