anchor.diff:  * It's impossible to have a parallel job with only some of the jobs within a group, as they're all created on the same YAML step entry.
   
   ## Using wait steps in job groups
  - 
  +
   You can have [wait steps](/docs/pipelines/wait-step) in a group. Such steps operate independently of other groups. For example, both groups will operate independently here, meaning `d.sh` won't wait on `a.sh` to finish:  
   
   ```yml
  
positive.code:       - wait
        - command: '4.sh'
  ```
  {: codeblock-file="pipeline.yml"}  
  
  Running jobs in parallel has some limitations:  
  
  <!-- vale off -->
  * If you put a command between consecutive groups in a YAML config, the groups will no longer be interpreted as parallel.
  
negative.code:   - command: "yay.sh"
      depends_on: "toast"
  ```
  {: codeblock-file="pipeline.yml"}
  
  ## Group merging
  
  Different groups that have the same `group` name or `label` and are defined consecutively in the pipeline will be merged together in the Buildkite UI. 
  
  