its not really a code, sniper says other wise but at the screen where you type all the stuff you want like your clan name, tag and motto and where you choose your emblem if you put something unique in there and then search for it in the searcher feature you can edit it for multiple liines,

-----FOR CLAN NAME, EX:NoXposure-----
if you type that for you clan name just search for it and then it should give you a list of address just like anything thing else, but just try the top few addresses and copy the address and paste it in your browser from there you can edit your text and you would do the same for the motto and tag although you dont really need to do that for the tag but you can, and the hex values for some stuff are here
----------------------------------------------------------------------------------------------------------------
0A:Next line
DB:underscore but with no bracket, mostly used for tags (EX: [Op_Red-FawX) thats how it would look, it will remove the next thing after it and make it and underscore

09:This value is equal to 3 blank spaces so if you make your tag with the clan tag creator and you enter the hex value 09 3 times it will be really nine regular blank spaces, this tut is harder to explain if not in person so i can show you but hopefully this helped and if you need anymore assistance just message me or reply back to this and ill get back to ya a.s.a.p. good luck