Hello,
I've replaced a couple of screenshots and made minor edits to the 3Apr draft of GS4209. It can be found here:
http://www.odfauthors.org/libreoffice/english/getting-started/feedback-lo4.2/gs4209-getting-started-with-math/view
Regards,
Martin
More work is still needed, IMO. My latest iteration, with new comments, is here:
http://www.odfauthors.org/libreoffice/english/getting-started/feedback-lo4.2/gs4209-getting-started-with-math/view
--Jean