FTKEEPROW
Name
	FTKEEPROW
Purpose
	Subscripts (and reorders) a FITS table.  A companion piece to FTDELROW.
Calling Sequence
	ftkeeprow, h, tab, subs
Input Parameters
	h    = FITS table header array
	tab  = FITS table data array
	subs = subscript array of FITS table rows.  Works like any other IDL
		subscript array (0 based, of course).
Output Parameters
	h and tab are modified
Modification History
	Written by R. S. Hill, ST Sys. Corp., 2 May 1991.
	Converted to IDL V5.0   W. Landsman   September 1997