Name

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      TBHELP

Purpose

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      Routine to print a description of a FITS binary table header

Calling Sequence

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      TBHELP, h, [TEXTOUT = ]

Inputs

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      h - FITS header for a binary table, string array

Optional Input Keyword

---

      TEXTOUT - scalar number (0-7) or string (file name) controling
              output device (see TEXTOPEN). Default is TEXTOUT=1, output
              to the user's terminal

Method

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      FITS Binary Table keywords NAXIS*,EXTNAME,TFIELDS,TTYPE*,TFORM*,TUNIT*,
      are read from the header and displayed at the terminal
      A FITS header is recognized as bein for a binary table if the keyword
      XTENSION has the value 'BINTABLE' or 'A3DTABLE'

Notes

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      Certain fields may be truncated in the display

System Variables

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      Uses the non-standard system variables !TEXTOUT and !TEXTUNIT. These
      are automatically defined by TBHELP if they have not been defined
      previously.

Procedures Used

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      REMCHAR, SXPAR(), TEXTCLOSE, TEXTOPEN, ZPARCHECK

History

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      W. Landsman February, 1991
      Parsing of a FITS binary header made more robust May, 1992
      Added TEXTOUT keyword August 1997
      Define !TEXTOUT if not already present W. Landsman November 2002
      Slightly more compact display W. Landsman August 2005
      Fix Aug 2005 error omitting TFORM display W. Landsman Sep 2005