Some [[Wikipedia:Terminate_and_Stay_Resident|TSR]]s (such as [[Istvan Pataki]]'s Novert) and mouse [[Wikipedia:Device_driver|driver]]s provide the option to disable or decrease mouse forward/backward movement. This is used especially by players to control forward/backward movement from the keyboard only and thus want to disregard inadvertent vertical mouse movement. Many source ports include this as an internal configuration option.
While the Options menu in Vanilla DOOM imposes an upper limit on the maximum mouse sensitivity that some may consider too low, it is possible to bypass this limit by manually editing the [[Configuration File]]. However, doing so will cause DOOM to crash whenever the Options menu is accessed.