A short option of the form -k , where k consists of single character. A short option with argument of the form -k arg , where k consists of a single character. A negative short option of the form -nk , where k consists of single character. This option is ignored, except that all remaining options are interpreted as file names, whether they start with - or not. If fname is - , the standard output is used.
Defaults is - .
Default is the encoding of the input document. If no key is given, yes is assumed. Default is no . If key is omitted, yes is assumed. Default is no .