Keyword names may be entered in either upper or lower case; they will be automatically translated to upper case by the program. A file containing a list of filenames may be used by prefacing the name of the file with a @. A file containing a list of keywords may be used by prefacing the name of the file with a @. Numeric values are read into binary form and written out. As of version 3.5.0, the number of decimal places is preserved.
The results of the changes can be checked by
reading individual header keywords using
gethead or by printing the entire header
(Added in WCSTools 2.7.2)