# Creating a New Configuration

The editor starts up with the factory default configuration. You can always return to factory default by selecting **File / New** in the menu.

In the upper left corner of the [Globals Tab](https://docs.rjmmusic.com/books/mastermind-editor-manual-46/page/globals-tab "V4:Globals Tab"), there is a **Model** parameter. This is where you can select which model of RJM product you're using. In the Mastermind editor, you can choose from *LT/7, PBC/6X* and *PBC/10*. In the Mastermind GT Editor, you can choose from *GT/10*, *GT/16* and *GT/22*

*[![Image showing the Model parameter in the Globals tab](https://docs.rjmmusic.com/uploads/images/gallery/2022-05/scaled-1680-/modelparam.jpg)](https://docs.rjmmusic.com/uploads/images/gallery/2022-05/modelparam.jpg)*

Selecting a new value for **Model** will affect which settings are loaded when selecting **File / New**. When you change the selected model, you will also be prompted to revert to factory settings for the newly selected model. In most cases, it's recommended to say 'Yes' when prompted so that you start with settings that are known to work on your device.