anchor.diff:  * Cold
     - <<ilm-set-priority,Set Priority>>
     - <<ilm-unfollow,Unfollow>>
  +  - <<ilm-readonly,Read-Only>>
  +  - <<ilm-searchable-snapshot, Searchable Snapshot>>
     - <<ilm-allocate,Allocate>>
     - <<ilm-migrate,Migrate>>
     - <<ilm-freeze,Freeze>>
  -  - <<ilm-searchable-snapshot, Searchable Snapshot>>
   * Frozen
     - <<ilm-searchable-snapshot, Searchable Snapshot>>
   * Delete
  
positive.code:   - <<ilm-readonly,Read-Only>>
    - <<ilm-shrink,Shrink>>
    - <<ilm-forcemerge,Force Merge>>
  * Warm
    - <<ilm-set-priority,Set Priority>>
    - <<ilm-unfollow,Unfollow>>
  
negative.code: [[ilm-phase-actions]]
  === Phase actions
  
  {ilm-init} supports the following actions in each phase. {ilm-init} executes the
  actions in the order listed.
  
  * Hot
    - <<ilm-set-priority,Set Priority>>
  