Occasionally the raw data archiving script, SAVE_DATA, fails to make a
directory listing of the tape it has just written.  I.e., the last lines
printed do not review what scans and save sets are stored on that tape or
say how many MBytes are now stored.  This can foul up future SAVE_DATA's 
because the script is unaware of the previous BACKUP.

One way for SAVE_DATA to fail in this fashion is for one to have deleted some
of the older raw data directories with DELETE_RAW_DATA before the SAVE_DATA has
finished.  (DELETE_RAW_DATA renames SAVE_DATA's working directory and it can't
find it any more.)  I'm sure there are other failure modes.  

There's now a script to finish up the SAVE_DATA script: SAVE_DATA_DIR.  
First do a SET DEFAULT to the KRAW:[SMT.OLD_DATAn] directory corresponding to
the files just saved on tape.  Next push the data tape back into the tape 
drive (if necessary) and type SAVE_DATA_DIR.  

This script assumes that only one such directory was skipped.  If more than one
was skipped, one of the entries will not have the Scan number range printed. 
You'll have to find the OLD_DATAn directories missing, figure out the scan
number range with the DIR command, and edit this range into the
DAT:xxDATA_DIR.LIS file by hand.