"Chargen", or the character generator, is a TCP/IP service commonly available on Unix systems. It is generally located on port 19, and does nothing but recite the alphabet for you, repeatedly, as fast as it can. Very stimulating

"Character Generation"; The place or time of character creation; The act of creating a new character, or the part of the game mechanics which does so.

( link / ) Short for "character generation," the process by which the players create their PCs.