| # RTL Testing | |
| To test the Calypso interface in RTL-mode, you need to set your interface language to something which is RTL (e.g. Hebrew) at [Me → Account](https://wordpress.com/me/account). | |
| If you are testing in your local development environment, you will also need to: | |
| - Change `rtl` to `true` in `config/development.json`. | |
| - Restart your local server (`Ctrl-c`, then `yarn start` again). | |
| These additional steps are required because we don't have a user on the server-side in your local environment. On WP.com, we know who the user is, so we can programmatically determine if we should be running in RTL mode. | |