Batteries included is a community-driven effort to standardize on an uniform, documented, and comprehensive OCaml development platform. . Batteries included serves the following purposes: * define a standard set of libraries which may be expected on every compliant installation of OCaml * organize these libraries into a hierarchy of modules, with one source of documentation * define a standard set of language extensions which may be expected on every compliant installation of OCaml * provide a consistent API for otherwise independent libraries. . This metapackage is provided for convenience, to install all of batteries included at once.