anchor.diff:  
   Check the list of Availability Zones that exist for your region using the following command:
   
  -    aws --region <region> ec2 describe-availability-zones
  +    $ aws --region <region> ec2 describe-availability-zones
   
   Create a cluster with multi-master, multi-node and multi-az configuration. We can create and build the cluster in
   one step by passing the `--yes` flag.
   
  -    kops create cluster \
  +    $ kops create cluster \
         --name example.cluster.com \
         --master-count 3 \
         --node-count 5 \
  
positive.code: 
  For a cluster created using kops, this can be done by editing the cluster configuration using the command shown:
  
    kops edit cluster --name example.cluster.k8s.local
  
  This will open up the cluster configuration in a text editor. Update the `spec` attribute such that it looks like as shown:
  
  
negative.code: == Instance groups with kops
  
  An instance group is a kops concept that defines a grouping of similar machines. In AWS, an instance group maps to an
  AutoScaling Group (ASG). Instructions on how to create instance groups can be found link:instance-groups/readme.adoc[here].
  
  == Delete cluster
  
  Any cluster can be deleted as shown:
  
      $ kops delete cluster \
        <cluster-name> \
        --yes
  
  `<cluster-name>` is the name of the cluster. For example, our `example.cluster.k8s.local` cluster can be deleted as:
  
      $ kops delete cluster \
        example.cluster.k8s.local \
        --yes
  
  If you leave off the `--yes` flag, you will get a listing of all the resources kops will delete.  To confirm deletion, run the command again appending `--yes`.
  
  If you created a private VPC, then an additional cleanup of resources is required as shown below:
  
      # Find Route53 hosted zone ID from the console or via CLI and delete hosted zone
      $ aws route53 delete-hosted-zone --id Z1234567890ABC
  
      # Delete VPC if you created earlier
      $ aws ec2 detach-internet-gateway --internet $IGW --vpc $VPCID
      aws ec2 delete-internet-gateway --internet-gateway-id $IGW
      aws ec2 delete-vpc --vpc-id $VPCID
  
  == Appendix: Create a DNS-based Kubernetes cluster
  
  To create a DNS-based Kubernetes cluster you'll need a top-level domain or subdomain that meets one of the following scenarios:
  
  