-ls
mess -listsource [<systemname|wildcard>]
Displays a list of drivers and the names of the source files their system drivers live in. Useful for finding which driver a system runs on in order to fix bugs. By default all systems are listed; however, you can limit this list by specifying a driver name or wildcard after the -listsource command.
If you wish to write the info to a textfile, add this to the end of your command:
> filename
where filename is the textfile's path and name (e.g., c:\mess\list.txt).