All language files in this folder are included in the LocalizationService.

The path to this folder is configured in EPiServerFramework.config:

<localization fallbackBehavior="FallbackCulture, MissingMessage, Echo" fallbackCulture="en" xdt:Transform="Insert">
    <providers>
        <add virtualPath="/Resources/LanguageFiles"
            name="languageFiles"
            type="EPiServer.Framework.Localization.XmlResources.FileXmlLocalizationProvider" />
    </providers>
</localization>
