Translations:Help:Extension:Translate/Unstructured element translation/9/en

The message group id,, must be unique, so don't reuse the same id for multiple groups. The second parameter to the, refers to the Mediawiki:Sidebar-messages page. The label is shown in dropdowns and other places where you can select a message group. The description is shown in Special:Translate. Those are the values you can and should change to what suits your wiki when adding a new custom message group.