The syntax of a wgetrc command is simple:
variable = value
The variable will also be called command. Valid values are different for different commands.
The commands are case-insensitive and underscore-insensitive. Thus ‘DIr__PrefiX’ is the same as ‘dirprefix’. Empty lines, lines beginning with ‘#’ and lines containing white-space only are discarded.
Commands that expect a comma-separated list will clear the list on an empty command. So, if you wish to reset the rejection list specified in global wgetrc, you can do it with: