There are over 6,800 scripts that run the majority of the higher level functions in game. Those scripts range in length from "just a couple lines" to thousands and thousands. This does not include the lower level functions handled in the server code or either of the client code bases...so the short answer, is a lot!The entire code of client and server? Into a single issue of a magazine? My mistake? No, just no...
I'm not sure, how many lines of text there are in an average magazine, but it would fill several issues...
@Kyronix
Just out of curiosity, I'm pretty sure you have or can run some code metrics. How many lines of code has UO, server & both clients? Would be a nice fun fact...