Doomsday's internal key codes are called [[ddkey]]s. They correspond partially to ASCII codes.

//See also:// [[http://deng.git.sourceforge.net/git/gitweb.cgi?p=deng/deng;a=blob;f=doomsday/engine/api/dd_share.h;h=1f98dd7baf8245b801744a37f5837836db94d29a;hb=HEAD#l471|DDKEYs defined in dd_share.h]]