			CLEAN Command
 
	This command is used to "clean-up" your directory.
	It will
 
	       Delete    all but the highest numbered version of a file
			 (e.g. if there are two versions of one file
			       WING.SCT;1 and WING.SCT;2 then WING.SCT;1
			       will be deleted from the directory).
 
	       TRUNCATE  all files (remove unused allocated blocks and
			 return them to the file management system).
 
	       TOTAL     the number of files and allocated disk blocks and
			 print these numbers on your terminal.
 
	The clean command will not affect those files which have been secured
	or protected from being deleted.  Such files, if of a lower version
	number than a file of identical name, will cause CLEAN to print an
	before error message and continue on to the next file in your directory.
