% @(#)subtraacat.hlq	17.1.1.1 (ESO-IPG) 01/25/02 17:44:00 
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%.COPYRIGHT  (c)  1990 European Southern Observatory
%.IDENT      subtraicat.hlq
%.AUTHOR     KB, IPG/ESO
%.KEYWORDS   MIDAS, help files, SUBTRACT/ACAT
%.PURPOSE    On-line help file for the command: SUBTRACT/ACAT
%.VERSION    1.0  03-JUN-1991 : Creation, KB
%.VERSION    1.1  20-JUN-1991 : Update, KB
%----------------------------------------------------------------
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SECTION./ACAT
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SUBTRACT/ACAT					20-JUN-1991  KB
\oc\su
SUBTRACT/ACAT [cat_name] frame_list
	remove entries from an ASCII\ file catalog
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Purpose: 
          Remove entries from an ASCII file catalog.
\up\sy
Syntax: 
          SUBTRACT/ACAT [cat_name] [frame_list]
\ys\pa
          cat_name = name of ASCII file catalog; \\
              defaulted to currently active ASCII file catalog;
              if there is an ASCII catalog enabled (cf. SET/ACAT),
              'cat_name' is defaulted to this "active" ASCII catalog
\ap\pa
          frame_list = list of files to be subtracted; may be: \\
               file specifications, separated by a comma (no spaces!);\\
               or a single catalog name;\\
               or wildcard specifications (e.g. a3*,n*);\\
               or numbers referring to the names (e.g. \#7,\#1).
\ap\no
Note:
          The different options for the frame_list may not be mixed!
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See also:
          ADD/ACAT, READ/ACAT, CREATE/ACAT
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Examples:
\ex
          SUBTRACT/ACAT dec88 bar.chart
          Remove the entry for file bar.chart from catalog dec88.cat.
\xe\ex
          SUBT/ACAT dec88 zap*
          Remove entries for all files where the names begin with the
          string "zap" from catalog dec88.cat.
\xe\ex
          SUBT/ACAT dec88 nov89.cat
          Remove entries for all files which are in the ASCII catalog
          nov89.cat from catalog dec88.cat.
\xe\ex
          SUBT/ACAT dec88 \#1,\#6
          Remove entries no. 1 and no. 6 from catalog dec88.cat.
\xe \sxe