_task_name_ = string_kw(default="headerlet_summary")
filename = string_kw(default="", comment="FITS image file name")
columns = string_kw(default="", comment="Headerlet keyword(s) to be reported")
pad = integer_kw(default=2, comment="Number of spaces between output columns")
maxwidth = integer_or_none_kw(default=None, comment="Max width for each column")
output = string_kw(default="", comment="Name of output file for summary")
clobber = boolean_kw(default=True, comment="Overwrite previously written summary?")
quiet = boolean_kw(default=False, comment="Suppress output of summary to STDOUT?")