SIMPLE  =                    T  /
BITPIX  =                    8  /
NAXIS   =                    0  / to align the next keyword
CHECKSUM= 'd54Vd21Td21Td21T'    / ASCII 1's complement checksum
DATASUM = '       0'            / checksum of data records
CHECKVER= 'COMPLEMENT'          / checksum version ID
END