Nice tut indeed , deserves to be a permanent one
Oh , and the two question marks ...
â€¢ lati - this , I think , stands for "latitude"
â€¢ long - this one , IMO , stands for "longitude"
latitude and longitude are , if my english is still quite well (hey , belgian dude here , so bare with me) measures to get coordinates , like with the Global Positioning System you might have in your car , it should always tell you where on the globe you are , and it uses 2 numbers for this , the latitude and the longitude.
So these two things might be the place the effect happens , or the height and width of where it happens .... I dunno o_O