I have updated Calc Guide Chs 5&6 following Martin Saffron's review
for v4.1 and published them on the wiki and here:
http://www.odfauthors.org/libreoffice/english/calc-guide/published-lo-4.1/
PeterS, if you have already started on either of those, your work was
likely to supercede mine anyway (especially with illustrations that
need replacing), so I don't think the minor potential duplication of
effort is a problem.
I have also moved other v4.1 chapter files from their previous
locations to that folder.
IMO, finishing Chapter 14 (Customizing) and Appendix B (Calc
Functions) are the highest priority items on the updating list. They
are here:
http://www.odfauthors.org/libreoffice/english/calc-guide/draft-lo4.1
--Jean