Complex sentence: The feature allows a single class to be split across multiple files, mainly to enable the XAML graphical user interface design tools to auto-generate code in a separate file in order not to break the logic written by the developer.
Split into simpler sentences: The feature allows a single class to be split across multiple files. Mainly to enable the XAML graphical user interface design tools to auto-generate code in a separate file to not break the logic written by the developer.