# Customizing Settings

With the [CLI](../../reference/cli.ipynb), if you create an `{lite-dir}/overrides.json`
in either the root, or a specific `{lite-dir}/{app}/` directory, these will be merged
into `{output-dir}/{app?/}jupyter-lite.json#/jupyter-config-data/settingsOverrides`.

## Example

Let's say you would like to customize the behavior of the `REPL` app, and use the
terminal interaction mode.

You can create the following `overrides.json` in `{lite-dir}/repl/` before building:

```json
{
  "@jupyterlab/console-extension:tracker": {
    "interactionMode": "terminal"
  }
}
```

One of the effects of using `terminal` for the `interactionMode` will be the switch from
<kbd>Shift-Enter</kbd> to <kbd>Enter</kbd> for executing code.