extends ../../ts/_cache/glossary.jade block includes include _util-fns block annotation-defn :marked When unqualified, _annotation_ refers to a Dart [metadata annotation][metadata] (as opposed to, say, a type annotation). A metadata annotation begins with the character `@`, followed by either a reference to a compile-time constant (such as [`Component`](#component)) or a call to a constant constructor. See the [Dart Language Guide][metadata] for details. The corresponding term in TypeScript and JavaScript is [_decorator_](!{docsPath}/ts/latest/glossary.html#decorator). [metadata]: https://www.dartlang.org/guides/language/language-tour#metadata block bootstrap-defn-top :marked You launch an Angular application by "bootstrapping" it with the [bootstrap][bootstrap] method. Bootstraping identifies an application's top level "root" [component](#component), which is the first component that is loaded for the application, and optionally registers service [providers](#provider) with the [dependency injection system](#dependency-injection). For more information, see the [Setup](!{docsLatest}/guide/setup.html) page. [bootstrap]: !{docsLatest}/api/angular2.platform.browser/bootstrap.html block decorator-defn :marked When used in this guide, these JavaScript terms are taken as synonymous with [annotation](#annotation). block module-defn //- Taken from the Dart Difference in guide/architecture.jade :marked In this guide, the term _module_ refers to a Dart compilation unit, such as a library, or a package. (If a Dart file has no `library` or `part` directive, then that file itself is a library and thus a compilation unit.) For more information about compilation units, see the chapter on "Libraries and Scripts" in the [Dart Language Specification](https://www.dartlang.org/docs/spec/). block append snake-case-defn :marked Library and file names are often spelled in snake_case. Examples include: `angular_tour_of_heroes` and `app_component.dart`. block zone-defn :marked Zones are a mechanism for encapsulating and intercepting a Dart application's asynchronous activity. Learn more about zones in this [article][zones]. [zones]: https://www.dartlang.org/articles/libraries/zones