Radarr/UI/Settings/DownloadClient/BlackholeViewTemplate.html

<fieldset>
    <legend>Blackhole</legend>
    <div class="control-group">
        <label class="control-label">Blackhole Folder</label>

        <div class="controls">
            <input type="text" name="blackholeFolder" class="x-path"/>
            <span class="help-inline">
                <i class="icon-form-info" title="The folder where your download client will pickup .nzb files"/>
            </span>
        </div>
    </div>
</fieldset>