<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<!--Converted with LaTeX2HTML 98.1p1 release (March 2nd, 1998)
originally by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds
* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan
* with significant contributions from:
Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
<HTML>
<HEAD>
<TITLE>Command Overview</TITLE>
<META NAME="description" CONTENT="Command Overview">
<META NAME="keywords" CONTENT="vol1">
<META NAME="resource-type" CONTENT="document">
<META NAME="distribution" CONTENT="global">
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<LINK REL="STYLESHEET" HREF="vol1.css">
<LINK REL="next" HREF="node67.html">
<LINK REL="previous" HREF="node64.html">
<LINK REL="up" HREF="node55.html">
<LINK REL="next" HREF="node66.html">
</HEAD>
<BODY >
<!--Navigation Panel-->
<A NAME="tex2html1298"
HREF="node66.html">
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
SRC="icons.gif/next_motif.gif"></A>
<A NAME="tex2html1294"
HREF="node55.html">
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
SRC="icons.gif/up_motif.gif"></A>
<A NAME="tex2html1288"
HREF="node64.html">
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
SRC="icons.gif/previous_motif.gif"></A>
<A NAME="tex2html1296"
HREF="node1.html">
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
SRC="icons.gif/contents_motif.gif"></A>
<A NAME="tex2html1297"
HREF="node216.html">
<IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index"
SRC="icons.gif/index_motif.gif"></A>
<BR>
<B> Next:</B> <A NAME="tex2html1299"
HREF="node66.html">List of Commands</A>
<B> Up:</B> <A NAME="tex2html1295"
HREF="node55.html">Table File System</A>
<B> Previous:</B> <A NAME="tex2html1289"
HREF="node64.html">Operations on Tables</A>
<BR>
<BR>
<!--End of Navigation Panel-->
<H1><A NAME="SECTION00860000000000000000"> </A>
<A NAME="command-overview"> </A>
<BR>
Command Overview
</H1>
<P>
In this section we include a short description of the table commands in
alphabetical order, (see the Detailed Command Description in Volume C of the MIDAS User Guide for a
more detailed explanation).
<P>
<DL COMPACT><DT>Reference to tables
<DD>is done by the filename. The extension <TT>.tbl</TT>
must be appended to the filename in commands which can work both
on images and tables (e.g.: <TT>READ/DESCRIPTOR table.tbl</TT>).
<P>
<DT>Reference to columns
<DD>can be done either by ``name'' or by
``number''. Columns are referred to by name as <TT>:label</TT>,
where <TT>label</TT> is a character string
(Note the starting colon `:' in front of `<TT>label</TT>'.)
The string (max. 16 characters, case insensitive) should start
with a letter and may contain alpha-numeric characters and
the underscore symbol.
Columns are referred by number as <TT>#n</TT>,
where <TT>n</TT> is the integer defining the column position.
<P>
<DT>Access to rows
<DD>can be done in two modes, ``sequential'' or
``direct''.
<UL>
<LI>Sequential access is defined by the row number as @<TT>n</TT>, where
<TT>n</TT> is an integer constant.
<LI>Direct access is done through the values in the reference
column.
</UL></DL>
<P>
<BR><HR>
<!--Table of Child-Links-->
<A NAME="CHILD_LINKS"> </A>
<UL>
<LI><A NAME="tex2html1300"
HREF="node66.html">List of Commands</A>
</UL>
<!--End of Table of Child-Links-->
<HR>
<!--Navigation Panel-->
<A NAME="tex2html1298"
HREF="node66.html">
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
SRC="icons.gif/next_motif.gif"></A>
<A NAME="tex2html1294"
HREF="node55.html">
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
SRC="icons.gif/up_motif.gif"></A>
<A NAME="tex2html1288"
HREF="node64.html">
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
SRC="icons.gif/previous_motif.gif"></A>
<A NAME="tex2html1296"
HREF="node1.html">
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
SRC="icons.gif/contents_motif.gif"></A>
<A NAME="tex2html1297"
HREF="node216.html">
<IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index"
SRC="icons.gif/index_motif.gif"></A>
<BR>
<B> Next:</B> <A NAME="tex2html1299"
HREF="node66.html">List of Commands</A>
<B> Up:</B> <A NAME="tex2html1295"
HREF="node55.html">Table File System</A>
<B> Previous:</B> <A NAME="tex2html1289"
HREF="node64.html">Operations on Tables</A>
<!--End of Navigation Panel-->
<ADDRESS>
<I>Petra Nass</I>
<BR><I>1999-06-09</I>
</ADDRESS>
</BODY>
</HTML>
