Adds a language item. Language placeholders preceded with "#" are replaced with full text in Garry's Mod once registered with this function.

A convenience function that formats a localization phrase. See language.GetPhrase. This is exactly the same as doing string.format( langauge.GetPhrase( "string" ), arg1, arg2, etc).

Retrieves the translated version of inputted string. Useful for joining multiple translated strings into one.