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<!-- EMBER_CLI_FASTBOOT_TITLE -->  <meta name="ember-cli-head-start" content>  <title>@action, {{on}} and {{fn}} - Octane Upgrade Guide - Ember Guides</title>

  <meta name="description" content="Octane provides a set of new conventional APIs for creating and adding event handlers and actions to your components and templates: 

- The @action decorator
- The {{on}} modifier
- The {{fn}}