anchor.diff:  
         extraMessagesConfig = mkOption {
           default = "";
  +        type = types.lines;
           description = ''
             Extra configuration to be passed in Messages directive.
           '';
  
positive.code: 
        mediaType = mkOption {
          # TODO: required?
          description = ''
            The specified name-string names the type of media supported by this
            device, for example, <literal>DLT7000</literal>. Media type names are
  
negative.code: 
        extraStorageConfig = mkOption {
          default = "";
          type = types.lines;
          description = ''
            Extra configuration to be passed in Storage directive.
          '';
  