get-wcs --version (return code: 0)
get-wcs: invalid option -- '-'
get-wcs <input-file>
[-e <extension>]
[-o <output-file>]
[-t]: force TAN (not SIP)
get-wcs --help (return code: 0)
get-wcs: invalid option -- '-'
get-wcs <input-file>
[-e <extension>]
[-o <output-file>]
[-t]: force TAN (not SIP)