Culture Fallback
How Accept-Language maps to a localizer, how the specific/neutral/default fallback chain works, and what happens when a culture is partially or wholly unmatched.
How Accept-Language maps to a localizer, how the specific/neutral/default fallback chain works, and what happens when a culture is partially or wholly unmatched.
The localization API and the localizer engine behind it: term stacks, nested substitution, culture fallback, template set overrides, hot reload and noloc.