initialize doc-directory, not data-directory.
<INFOPATH>: Description reworded.
@item EMACSDOC
Directory for the documentation string file,
@file{DOC-@var{emacsversion}}. This is used to initialize the Lisp
-variable @code{data-directory}.
+variable @code{doc-directory}.
@item EMACSLOADPATH
A colon-separated list of directories to search for Emacs Lisp
files---used to initialize @code{load-path}.
A colon-separated list of directories. Used by the @code{complete} package
to search for files.
@item INFOPATH
-A colon-separated list of directories to search for Info files in.
+A colon-separated list of directories in which to search for Info files.
@item LC_ALL
@itemx LC_CTYPE
@itemx LANG