Radarr/UI/Settings/Indexers/Options/ViewTemplate.html

<fieldset>
    <legend>Options</legend>

    <div class="control-group">
        <label class="control-label">Retention</label>

        <div class="controls">
            <input type="number" min="0" name="retention"/>
        </div>
    </div>

    <div class="control-group">
        <label class="control-label">RSS Sync Interval</label>

        <div class="controls">
            <input type="number" min="15" max="120" name="rssSyncInterval"/>
        </div>
    </div>

    <div class="control-group">
        <label class="control-label">Release Restrictions</label>

        <div class="controls">
            <textarea rows="3" name="releaseRestrictions" class="release-restrictions"></textarea>
            <span class="help-inline">
                <i class="icon-question-sign" title="Blacklist NZBs based on these words (case-insensitive)"/>
            </span>
            <span class="text-area-help">Newline-delimited set of rules</span>
        </div>
    </div>
</fieldset>