The following command-line options are supported by all of the programs described in this manual.
Options in file are separated by whitespace.  A whitespace
character may be included in an option by surrounding the entire
option in either single or double quotes.  Any character (including a
backslash) may be included by prefixing the character to be included
with a backslash.  The file may itself contain additional
@file options; any such options will be processed recursively.