L describe-language-environment. This describes either the a
specific language environment (if you type its name)
or the current language environment (if you type just RET).
-m describe-mode. Print documentation of current major mode,
- which describes the commands peculiar to it.
+m describe-mode. Print documentation of current minor modes,
+ and the current major mode, including their special commands.
n view-emacs-news. Shows emacs news file.
p finder-by-keyword. Find packages matching a given topic keyword.
s describe-syntax. Display contents of syntax table, plus explanations