SXHWRITE

       Procedure to write an STSDAS or FITS header to disk as a *.hhh file.

       SXHWRITE,name,h

       name - file name. If an extension is supplied it must be 3 characters
               ending in "h".
       h - FITS header, string array

       File with specified name is written.  If qualifier not specified
       then .hhh is used
       SXHWRITE will modify the header in the following ways, if necessary
       (1)  If not already present, an END statement is added as the
               last line.   Lines after an existing END statment are
               deleted.
       (2)  Spaces are appended to force each line to be 80 characters.
       (3)  On Unix machines, a carriage return is appended at the end
               of each line.   This is consistent with STSDAS and allows
               the file to be directly displayed on a stream device

       zparcheck, fdecomp

       version 1  D. Lindler  June 1987
       conversion cleaned up.  M. Greason, June 1990
       Add carriage return at the end of Unix files   W. Landsman Oct 1991
       Use SYSTIME() instead of !STIME for V5.0 compatibility Aug 1997
       Converted to IDL V5.0   W. Landsman   September 1997

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