inhdu,   fr, a, "", , , "Filename[extension] of HDU to be inserted "
infile,  fr, a, "", , , "Filename[extension] of file to insert into "
outfile, f, a, "", , , "Output file "
after,   b, h, "YES",,, "Insert AFTER (else BEFORE) the infile HDU? "
clobber, b, h, "NO",,, "Overwrite existing output file? "
chatter, i, h, 1, 0, 5, "Verbosity level "
history, b, h, "NO",,, "Write HISTORY keywords in output HDU? "
mode,    s, h, "ql",   , , "Mode "