/* NOTE: THIS EFUN APPEARS NOT TO HAVE BEEN IMPLEMENTED */

SYNOPSIS
	int rename(string from, string to)

DESCRIPTION
	The efun "rename" will move <from> to the new name <to>. If <from> is
	a file, then <to> may be either a file or a directory. If <from> is
	a directory, then <to>爃as to be a directory. If <to> exists and is
	a directory, then <from> will be placed in that directory and keep
	its original name.

	You must have write permission for <from> to rename the file.

	It is only possible to change name of a directory within a directory
	on machines running System V, i.e. it is not possible to move to 
	another directory. It is not possible to move a directory across
	filesystems on any system.

	On successfull completion "rename" will return 0. If any error occurs
	1 is returned.

SEE ALSO
	mkdir(E), rmdir(E), rm(E)
