FXBTDIM()

       Parse TDIM-like kwywords.

       Parses the value of a TDIM-like keyword (e.g. TDIMnnn, TDESC, etc.) to
       return the separate elements contained within.

       Result = FXBTDIM( TDIM_KEYWORD )

       TDIM_KEYWORD    = The value of a TDIM-like keyword.  Must be a
                         character string of the form "(value1,value2,...)".
                         If the parentheses characters are missing, then the
                         string is simply returned as is, without any further
                         processing.

       None.

       The result of the function is a character string array containing the
       values contained within the keyword parameter.  If a numerical result
       is desired, then simply call, e.g.
               Result = FIX( FXBTDIM( TDIM_KEYWORD ))

       None.

       None.

       GETTOK

       None.

       The input parameter must have the proper format.  The separate values
       must not contain the comma character.  TDIM_KEYWORD must not be an
       array.

       None.

       Data Handling, I/O, FITS, Generic.

       William Thompson, Jan. 1992.
       William Thompson, Jan. 1993, renamed to be compatible with DOS
               limitations.

       William Thompson, GSFC, January 1992.

       Version 1, William Thompson, GSFC, 12 April 1993.
               Incorporated into CDS library.

       Version 1, 12 April 1993.
       Converted to IDL V5.0   W. Landsman   September 1997

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