C-k Info-goto-emacs-key-command-node. Type a command key sequence;
it takes you to the Info node for the command bound to that key.
l view-lossage. Show last 100 characters you typed.
-L describe-language-environment. This describes either the a
+L describe-language-environment. This describes either 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 minor modes,