anchor.diff:        type = types.nullOr types.str;
         default = "127.0.0.1";
         example = null;
  -      description = ''
  +      description = mdDoc ''
           Address or interface to bind to and tell other Cassandra nodes
           to connect to. You _must_ change this if you want multiple
           nodes to be able to communicate!
   
  -        Set listenAddress OR listenInterface, not both.
  +        Set {option}`listenAddress` OR {option}`listenInterface`, not both.
   
           Leaving it blank leaves it up to
  -        InetAddress.getLocalHost(). This will always do the Right
  -        Thing _if_ the node is properly configured (hostname, name
  +        `InetAddress.getLocalHost()`. This will always do the "Right
  +        Thing" _if_ the node is properly configured (hostname, name
           resolution, etc), and the Right Thing is to use the address
           associated with the hostname (it might not be).
   
  -        Setting listen_address to 0.0.0.0 is always wrong.
  +        Setting {option}`listenAddress` to `0.0.0.0` is always wrong.
         '';
       };
   
  
positive.code:       type = types.lines;
        default = "";
        example = literalExpression ''"CLASSPATH=$CLASSPATH:''${extraJar}"'';
        description = ''
          Extra shell lines to be appended onto cassandra-env.sh.
        '';
      };
  
  
negative.code:     clusterName = mkOption {
        type = types.str;
        default = "Test Cluster";
        description = mdDoc ''
          The name of the cluster.
          This setting prevents nodes in one logical cluster from joining
          another. All nodes in a cluster must have the same value.
  