|  | @c This file is designed to be included in manuals that use | 
|  | @c expandargv. | 
|  |  | 
|  | @item @@@var{file} | 
|  | Read command-line options from @var{file}.  The options read are | 
|  | inserted in place of the original @@@var{file} option.  If @var{file} | 
|  | does not exist, or cannot be read, then the option will be treated | 
|  | literally, and not removed. | 
|  |  | 
|  | Options in @var{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 @var{file} may itself contain additional | 
|  | @@@var{file} options; any such options will be processed recursively. |