About a year ago, Wilfred Hughes introduced the Helpful package. The idea was to enhance the Emacs built-in help function with context and additional information. Now Hughes revisits Helpful and talks about its new features.
You can checkout Hughes’ post for the details but a couple of features are worth mentioning. He’s evolved Helpful into a sort of interface console from which you can set variables and trace or debug functions. He’s also improved the formatting and added additional useful information.
I meant to give Helpful a try when it was first introduced but I never got around to it. Hughes’ new post has encouraged me, again, to give it a go. If you use Emacs help a lot, you should definitely read Hughes’ two posts and perhaps give Helpful a spin. It’s on MELPA and MELPA stable so installation—if only on a trial basis—is easy.