Speaking as somebody who has no idea what X..&lt;Y means, I assume it means &quot;start from X and carry on for as long as you are less-than Y&quot;? Is that correct?<p>I wonder what somebody who had no idea about X++ would guess it meant? Based on my daily conversations, if I didn&#x27;t know already, I would guess it means &quot;variable X has done a good job and deserves some IRC karma&quot;...