ren_bloom turns down some ambient lighting (general darkening of picture).Some positive framerate changes are achieved by Less graphics details means greater framerate (smoothness of motion, responsiveness of scrolling). (there are many) will turn on/off rendering of some graphical details. (Cheats must be enabled for this to work) ui_DebugAltClick allows you to control an AI.cam_ShakeMult enables or disables the camera shaking effect (it can get quickly annoying).Con_ListCommands lists most(?) commands and a one line comment or explanation.