The editor inside TeX Writer is extremely customizable. But where is the settings? Well, we decide not to offer a few options in a settings view, but to provide infinite options that you can create by yourself in a settings file twinit.l. If you'd like to personalize the editor to your own taste (and pref­erably a vim or emacs user),  please continue to read the following article on texwriterapp.com:

Customizing TeX Writer »

And if you come out with a great configuration, please don't hesitate to share it with us. We'll present it in our website so other people can find and use your configuration easily.