electron/docs/api/synopsis.md

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# Synopsis
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All of [Node.js's built-in modules](http://nodejs.org/api/) are available in
Electron and third-party node modules also fully supported as well (including
the [native modules](../tutorial/using-native-node-modules.md)).
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Electron also provides some extra built-in modules for developing native
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desktop applications. Some modules are only available in the main process, some
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are only available in the renderer process (web page), and some can be used in
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both processes.
The basic rule is: if a module is
[GUI](https://en.wikipedia.org/wiki/Graphical_user_interface) or low-level
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system related, then it should be only available in the main process. You need
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to be familiar with the concept of
[main process vs. renderer process](../tutorial/quick-start.md#the-main-process)
scripts to be able to use those modules.
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The main process script is just like a normal Node.js script:
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```javascript
var app = require('app');
var BrowserWindow = require('browser-window');
var window = null;
app.on('ready', function() {
window = new BrowserWindow({width: 800, height: 600});
window.loadUrl('https://github.com');
});
```
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The renderer process is no different than a normal web page, except for the extra
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ability to use node modules:
```html
<!DOCTYPE html>
<html>
<body>
<script>
var remote = require('remote');
console.log(remote.require('app').getVersion());
</script>
</body>
</html>
```
To run your app, read [Run your app](../tutorial/quick-start.md#run-your-app).