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C----------------------------------------------------------------------
subroutine ftppru(ounit,group,felem,nelem,status)
C set elements of the primary array equal to the undefined value
C ounit i Fortran output unit number
C group i number of the data group, if any
C felem i the first pixel to be written (this routine treats
C the primary array a large one dimensional array of
C values, regardless of the actual dimensionality).
C nelem i number of data elements to be set to undefined
C status i returned error stataus
C written by Wm Pence, HEASARC/GSFC, June 1991
integer ounit,group,felem,nelem,status,row
C the primary array is represented as a binary table:
C each group of the primary array is a row in the table,
C where the first column contains the group parameters
C and the second column contains the image itself
row=max(group,1)
call ftpclu(ounit,2,row,felem,nelem,status)
end
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