Usually, when writting code (in Emacs, of course :wink:), I forget a lot of times how to use a function, or what are their parameters. So frequently I use devhelp-word-at-point, which opens DevHelp and shows the required information.

If you are an Emacs fan, you may have notice a lot of cool changes from Emacs21 to Emacs22. One of those changes is related to defuns. A defun is simply a function definition. But, what is actually a ‘function definition’? Until Emacs21, a function definition is the code that...