# Settings and Themes If you click on your username at the top right of the toolbar, you'll be taken to the account interace. ```{image} images/account_interface4.png :align: center :scale: 25 % ``` (Note that your dumpling preferences will not be shared with any third parties.) I think this is pretty much self-explantory except, perhaps, for the User Settings. ## Dark Theme The "tactic theme" setting sets the global mode of tactic to either dark or light. If you change the setting, you won't see any immediate change. To see the change in this window, or any other, you'll need to refresh the window. However, you can always use the theme switch at the top right of the toolbar to instantly change both the theme of the current window as well as the user settings. Most of the images in this documentation were made using dark theme. I'm a dark theme person. ## Codemirror Dark/Light Theme The codemirror dark and light theme settings, which is only settable from the account interface, is something different. I know that the naming is confusing, but it is what it is. These setting controls what syntax coloring and styles will be used when displaying code. ## Preferred Interface There are two choices here, single-window and separate-tabs. In single-window, which is currently the default, you'll pretty much do everything in a single browser tab, and you'll jump among open panes using the sidebar. One of these single windows is called a "context". In separate-tabs mode, things will tend to be opened in separate browser tabs. Note that, at any time, you can click in the toolbar to create a new context or tabbed view. {doc}`here. ## Code Completion Settings If you enter an OpenAI API key here, then you'll be able to use the {doc}`AI chat and code completion ` features of Tactic. This is a paid feature, and you will be charged by OpenAI for the use of the API. You'll need an account. You can get an API key from OpenAI here: . If you enter an api key, but are annoyed by the code completions, you can also turn off them off temporarily with the `use ai code suggestions` setting. ## Settings in the sidebar You can manage a subset of your settings from the sidebar by clicking on the gear icon.