Look for key_w, key_a, ..., key_cuu, key_cud, key_cul, and key_cur through the find command in SED for anything related to it. I never used or really even seen the various scripts so I don't know. Normally, in the games I play, using the left arrow key turns you left (increase pan), the right arrow key to turn right (decrease pan), the up arrow key to accelerate and move forward and the down arrow key to move backwards. I've never played a game that used WASD (and the latest PC game I've played is Midtown Madness 2, a rather old racing game).