For features that support it, SabreTools has the ability to apply the contents of a MAME Extras INI to a DatFile. In short, this means that the values of the INI are applied to each set if the name matches in the Field that is specified. Since this can be used powerfully, here are a few pointers that may help you along:

• Extras expressions will look like --extra-ini=key:value. Each key is a Field name. Each value will be the path to the INI (either concrete or relative, concrete recommended).
• If the DatFile does not contain a field that suitably describes the value you're applying, consider using one of the "Comment" fields if applying only one INI
• If the INI does not contain any categories, then the value that will be applied to the field will be true. Keep this in mind for INIs like arcade.ini.
• For all features (except batch) that use Extras, they are applied before doing any filtering. This means that filtering can be done on the field that was just added by the INI.