For information on a specific language environment (see Language Environments), type C-h L
describe-language-environment). This displays a help buffer
describing the languages supported by the language environment, and
listing the associated character sets, coding systems, and input
methods, as well as some sample text for that language environment.
The command C-h h (
view-hello-file) displays the file
etc/HELLO, which demonstrates various character sets by showing
how to say “hello” in many languages.
The command C-h I (
describe-input-method) describes an
input method—either a specified input method, or by default the
input method currently in use. See Input Methods.
The command C-h C (
coding systems—either a specified coding system, or the ones
currently in use. See Coding Systems.