All file related UI server commands operate on a number of input files
or directories, specified by one or more
Add the file or directory name to the list of pathnames to be
processed by the server. The parameter name must be an absolute
path name (including the drive letter) and is percent espaced (in
particular, the characters %, = and white space characters are always
escaped). If the option
--clear is given, the list of files is
cleared before adding name.
Historical note: The original spec did not define
--continued after the file name to indicate that
more files are to be expected. However, this has never been used and
thus removed from the specs.