when editing a post or posting a new topic, there's a set of four checkboxes below the text entry field. however.... one of them doesn't have any text associated with it, so i'd have no way of knowing what it does. looking at the source, i see this:
Code:
<label for="qr_retrtitle"><input type="checkbox" name="vbseo_retrtitle" value="1" id="qr_retrtitle" checked/></label>