Usually, full versions of some software localisation tools offer users the option to create translation bundles or Translation Tool Kits (TTKs). The idea behind translation bundles or TTKs is to have a sort of compressed file package containing all project materials that can be easily sent to (external) translators. Usually, TTKs contain user interface texts, glossaries, macros, instructions, references, password protection and licences, and can be used with free translator editions of software localisation tools.