[sudo-users] Limiting permissions to specific files and or directories

[spearsjd417 at comcast.net]

Is it possible to limit the cmd alias to only apply to specific files and or directories.
i.e     
 
Currently
Cmnd_Alias      FILE = /usr/bin/chmod 
 
Change it to
 
Cmnd_Alias      FILE = /usr/bin/chmod /somedirectory/somefile.txt
 
To allow the user to chmod, but only on this unique file.
 
For my purposes this could be a very useable action.
 
Thanks in advance for any assistance
 
John Spears
spearsjd417 at comcast.net