> [...] 2down\9up [...] 150down\10up<p>the backslashes from hell<p>reminds me of, although not completely related<p><a href="https://xkcd.com/727/" rel="nofollow">https://xkcd.com/727/</a><p>SCNR<p>PS: or, maybe he is a hardcore TeXnician, who knows.