anchor.diff:  --
   // tag::index-alias-def[]
   // tag::index-alias-desc[]
  -An index alias is a secondary name
  -used to refer to one or more existing indices.
  -
  -Most {es} APIs accept an index alias
  -in place of an index name.
  +An index alias is a logical name used to reference one or more indices.
  +
  +Most {es} APIs accept an index alias in place of an index name.
   // end::index-alias-desc[]
   
   See {ref}/indices-add-alias.html[Add index alias].
   // end::index-alias-def[]
   --
  +
  +[[glossary-index-lifecycle]] index lifecycle ::
  +// tag::index-lifecycle-def[]
  +The four phases an index can transition through: 
  +<<glossary-hot-phase,hot>>, <<glossary-warm-phase,warm>>,
  +<<glossary-cold-phase,cold>>, and <<glossary-delete-phase,delete>>.
  +For more information, see {ref}/ilm-policy-definition.html[Index lifecycle].
  +// end::index-lifecycle-def[]
  +
  +[[glossary-index-lifecycle-policy]] index lifecycle policy ::
  +// tag::index-lifecycle-policy-def[]
  +Specifies how an index moves between phases in the index lifecycle and 
  +what actions to perform during each phase. 
  +// end::index-lifecycle-policy-def[]
  +
  +[[glossary-index-pattern]] index pattern ::
  +// tag::index-pattern-def[]
  +A string that can contain the `*` wildcard to match multiple index names.
  +In most cases, the index parameter in an {es} request can be the name of a specific index, 
  +a list of index names, or an index pattern.
  +For example, if you have the indices `datastream-000001`, `datastream-000002`, and `datastream-000003`,
  +to search across all three you could use the `datastream-*` index pattern.  
  +// end::index-pattern-def[]
   
   [[glossary-index-template]] index template ::
   +
  
positive.code: Types are deprecated and are in the process of being removed.
  See {ref}/removal-of-types.html[Removal of mapping types].
  // end::type-def[]
  
negative.code: +
  --
  // tag::index-def[]
  // tag::index-def-short[]
  An optimized collection of JSON documents. Each document is a collection of fields, 
  the key-value pairs that contain your data. 
  // end::index-def-short[]
  
  An index is a logical namespace that maps to one or more
  <<glossary-primary-shard,primary shards>> and can have zero or more
  <<glossary-replica-shard,replica shards>>.
  // end::index-def[]
  