--all-normal Force all output files to be non-progressive. Can be
used to convert all input files to progressive JPEGs when
>>> ^NON- <<<
used with --force option.
--all-progressive Force all output files to be progressive. Can
be used to convert all normal (non-progressive) JPEGs input
files to progressive when used with --force option.
--stdin Read input image from standard input. When this option is
used then only one image is read from standard XXoutputXX. <<< INPUT
Two typos on the man page: