<qu>
option "config_file" c
#~~~~~~~~~~~~~~~~~~~~~
"(default='</qu>DEFAULT_CONFIG_FILE<qu>')"
string typestr="filename"
optional
details="
	</qu>CURRENT_PROGRAM<qu> reads its config file right after parsing
	the options that were given at the command line. If an
	option is given both at the command line and in the
	config file, the value that was specified at the command line
	takes precedence.
"
</qu>