Rich Wonneberger wrote in a message to Jack Stein:

 RW> *** Quoting Jack Stein to Leonard Erickson dated 08-25-99
 RW> *** 

> bit, which is your choice when you do backups with RAR or 
> PKZIP.  You 
> change the archive bit on full back-ups, on daily incremental backups 
> you don't reset the archive bit, so each day you get all changed files 

 RW> Sorry..  Differential backups do not reset the archive bit..
 RW>  Incremental backup does re-set it..

I see, my termonology is wrong.  I see two types of back-ups, one where you
set the archive bit, and one where you don't. 

 RW> You have been lucky with data so far..  When Murphy strikes,
 RW> you will know it..  :}

I don't think luck has anything to do with it.  I know I back up all my files
once a week, and all files that change since then daily.  I don't need 7 back
up files, just two, one full, and one partial, or incremental, or
differential, whatever name is given it.

                                              Jack 
--- timEd/2-B11
140/1