Feature files
Including features will extract all features that are installed via LCM. You should select this if you move from an H2 database to another database provider. This will export all features and their application definitions. This is potentially a data category with a lot of data that you can consider exporting separately.
Note: If you are setting up a new environment and installing all features and applications via LCM and you only what to export/import configuration this category should not be selected.