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These attributes are used to define how and what information is displayed to the user of the program.
copyright is a structured value containing three to five
values.  If copyright is used, then the first three are required.
| copyright = {
    date  = "1992-2004";
    owner = "Bruce Korb";
    eaddr = 'bkorb@gnu.org';
    type  = GPL;
};
 | 
settable.  The library client program will invoke the
SET_OPTION macro which will invoke a handler function that will
finally set these global variables.
optionUsage() does not work for you.  If you specify
my_usage as the value of this attribute, for example, you will
use a procedure by that name for displaying usage.  Of course, you will
need to provide that procedure and it must conform to this profile:
| void my_usage( tOptions* pOptions, int exitCode ) | 
optionUsage procedure
is AutoOpts Standard.  By specifying this attribute, the default format
will be GNU-ish style.  Either default may be overridden by the user with
the AUTOOPTS_USAGE environment variable.  If it is set to gnu
or autoopts, it will alter the style appropriately.  This attribute
will conflict with the usage attribute.
POSIXLY_CORRECT is defined in the environment.
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