````{tab} Linux
<br/>
If you're using `nano`, type control-`x`, then `y`, then the enter key.
<br/>
````
````{tab} OS X:
<br/>
If you're using `nano`, type control-`x`, then `y`, then the enter key.<br/>
````
````{tab} Windows:
<br/>
If you're using `notepad`, type control-`s` or choose `Save` from the `File` menu.
<br/>
````