Locking or making a folder read-only

Rez P <[email protected]>
Newsgroups gmane.comp.version-control.cvs.general
Message-ID <[email protected]> 
In our CVS repository we have 2 main project folders:
 
LegacyCode
NewCode
 
LegacyCode is no longer being developed and I would like to freeze it or lock it and make it read-only but make it accessible for future research.  Is it possible to do that and how?
 
Thanks
 
Rez 		 	   		  
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