anchor.diff:    steps:
       - command: "docker build"
   ```
  -{: codeblock-file="pipeline-02.yml"}  
  +{: codeblock-file="pipeline.yml"}  
   
   As a result, the groups will be merged into one in the UI, and the `"docker build"` step will be added to the existing group.  
  
positive.code:   steps:
      - command: "buildkite agent pipeline upload"
  ```
  {: codeblock-file="pipeline-01.yml"}
  
  And this YAML file uploads a pipeline that has a group with the same name:
  
  
negative.code:       - wait
        - command: '4.sh'
  ```
  {: codeblock-file="pipeline.yml"}  
  
  Running jobs in parallel has some limitations:  
  
  