Well, if the title I just typed shows up as I planned, that will answer the technical part of my question (BTW, ΠΙ, Kolędy, and ﻱ are the Greek word for “Pi”, the Polish word for Christmas carols [hey, it’s all I could think of at this moment] and the Arabic letter Yeh by itself, thrown in for good measure). I have never seen foreign letters used in thread titles ever, so though the question may seem odd to some, I have actually wondered about this.
The next question, I guess, would be whether it is allowed(though I would guess it is allowed as long as you don’t post something no one understands, thus peaking the moderators suspicions you might have posted something obscene or otherwise forbidden).