# Yahoo! UI Library

### yui 3.0.0b1

Yahoo! UI Library > yui
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### Module: yui

The YUI module contains the components required for building the YUI seed file. This includes the script loading mechanism, the dynamic loader and metadata, the module registration system, and the core utilities for the library.

This module contains the following classes:

- Array
- config
- Get
- Lang
- Loader
- Object
- UA
- YUI

#### Submodules:

`get`
  Provides a mechanism to fetch remote resources and insert them into a document.
`loader`
  Loader dynamically loads script and css files. It includes the dependency info for the version of the library in use, and will automatically pull in dependencies for the modules requested. It supports rollup files and will automatically use these when appropriate in order to minimize the number of http connections required to load all of the dependencies. It can load the files from the Yahoo! CDN, and it can utilize the combo service provided on this network to reduce the number of http connections required to download YUI files.

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