Translation

is_rtl: Check if the given language is a rtl or ltr language.
language: Return the language the resource (or translated text) will be displayed in.
language_sort: Sort a list of language codes or map with languages on their name. Return a list of {Code, LanguageProps} pairs.
trans_filter_filled: Filters all empty translations from a property.
language_dir: Return rtl or ltr depening on the direction of the language.
translation: Lookup a specific translation in a translated text. If the text is not translated then the text is returned as-is.
set_url_language: Change the language of an URL to another language. Useful to generate alternative URLs for a page.