anchor.diff:    `smtp.wait_on_quit` (<<cluster-update-settings,Dynamic>>);;
     If set to false the QUIT command is sent and the connection closed. If set to
     true, the QUIT command is sent and a reply is waited for. True by default.
  +--
   
   `xpack.notification.email.html.sanitization.allow`::
   Specifies the HTML elements that are allowed in email notifications. For
   more information, see {xpack-ref}/actions-email.html#email-html-sanitization[Configuring HTML
   Sanitization Options]. You can specify individual HTML elements
   and the following HTML feature groups:
  -
  ++
  +--
   [[html-feature-groups]]
  +
     `_tables`;;
     All table related elements: `<table>`, `<th>`, `<tr>`
                         and `<td>`.
  
positive.code: `xpack.notification.slack` ::
  Specifies account information for sending notifications
  via Slack. You can specify the following Slack account attributes:
  
  [[slack-account-attributes]]
  
    `url`;;
  
negative.code:   Default fields values for the issue created in Jira. See
    {xpack-ref}/actions-jira.html#jira-action-attributes[Jira Action Attributes] for more information.
    Optional.
  --
  
  [float]
  [[pagerduty-notification-settings]]
  