# About syntax styles

CotEditor's syntax styles control syntax coloring, Outline Menu, and the completion list, all together. To customize styles:

1. Choose CotEditor > Preferences.
2. Click Syntax.
3. Under the Syntax Style section, click “Choose style” and select the one you want to customize from the drop-down menu.
4. Click Edit.

- To use an existing style as a guide for creating your own, click Copy instead.

## See also

- Syntax coloring objects
- Customizing syntax coloring rules
- Outline Menu settings
- Setting up the completion list
- Syntax preferences