Comment 28 for bug 1532537

Gunnar and I have been working on a solution to this issue, based on Aders and Hans comments above and what gnome help does, and think we have something very practical and useful. It is now available for testing on help.ubuntu.com, in the development area, and only for the desktop help docs, so far. So here:

https://help.ubuntu.com/dev/ubuntu-help/index.html

Please see the footer at the bottom of any page. Try it and report back here.