Is there a best practice for internationalizing large amounts of text for built-in theme documentation or similar other than just wrapping in the __() or _e() functions?
Maybe providing ways of including different txt files based on language settings? (en_EN-setup-info.txt, bg_BG-setup-info.txt,, es_ES-setup-info.txt, etc…)

It just gets ugly with the mix of text/php.