This directory contains Emacs Lisp sources related to Texinfo. M-x texinfo-format-buffer is no longer the standard way to make .info files, and may or may not work. Use makeinfo instead. See the `makeinfo advantages' in the manual for why. The files here may or may not be newer than the versions in the latest Emacs distribution -- there is only one master source, so it simply depends on what was released later. Use whatever works better for you. They are not compiled or installed by default, because of the above, and also due to the wide variations in sites' Emacs installations. Even if you do install them, you may not want to compile them if your site is running multiple versions of Emacs, since .elc files are not portable between all Emacs releases. If you do want to compile them, just run the ./elisp-comp shell script.