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    From: Mike McMahon <MMcM at SCRC-TENEX>
	kmp@MIT-MC 01/22/82 03:07:20
	Old *Dired-n* buffers that have been successfully Q'd from should either go away 
	since re-entering them makes little sense in the state they are left in, or better
	still they might flush all the D'd lines and allow you to reuse them.
    What is needed is a way to find out if a host supports undeletion.
    On hosts that do, the data structure would be correct (i.e. removing D's from lines would
    offer to undelete the file.)
The data structure may not be correct if other people are using
the directory or if you have done other saves inbetween.