Language translation software is used to translate documents from one human language to another. There are three basic types of products: automatic, on-the-fly, and hybrid. Automatic translation software or global translation software is designed to translate an entire document at one time. These machine translation (MT) applications are used mainly with longer documents and may provide multi-language translation. On-the-fly translation software is used to transfer individual words or phrases, typically in shorter documents such as Web pages or email. Hybrid products are not pure translation programs, but provide translation-related tools such as a verb conjugator, dictionary, and spell checker.