Anytime I open up the code editor in Visual Studio, there is always an empty new line at the end of generated codes. I usually delete them since they seem irrelevant to me. However, recently I read code at [Github](https://github.com/facebook/php-sdk/wiki/Home/_compare/92be1b4%5E...92be1b4) which said:

```
\ No newline at end of file

```

This was the last line. Now I'm thinking those empty new lines at the end of source codes do have some relevance. But what do they mean? Do they provide any performance boost?