Is the default language (i.e., $$$DefaultLanguage, which is used as the basis for localization with $$$Text/etc. at compile time) always "en" for new Caché installations, or could it be different? How is this determined? I don't see an option to select a language during Caché installation.
Also, is there a supported/preferred API for setting the default language? Looking at %occMessages.inc, one option would be:
Set $$$DefaultLanguageNode = "en"
But I'd expect there to be a classmethod for this somewhere (and haven't managed to find it yet)