[[painless-sort-context]]
=== Sort context

Use a Painless script to
{es_version}/search-request-sort.html[sort] the documents in a query.

*Variables*

`params` (`Map`, read-only)::
        User-defined parameters passed in as part of the query.

`doc` (`Map`, read-only)::
        Contains the fields of the current document where each field is a
        `List` of values.

`_score` (`double` read-only)::
        The similarity score of the current document.

*Return*

`double`::
        The score for the specified document.

*API*

The standard <<painless-api-reference, Painless API>> is available.