Getting Started Chapters 12 & 13

I have published Getting Started Chapters 12 & 13. These are
essentially unchanged from the ones for v4.0 except for updates to the
copyright page.

Could someone please go through Ch14, Customizing LO? I know there
have been changes in some of the Options pages, which will require
some new screenshots and some amendments to the text.

If you don't feel confident about writing, or you can't take
screenshots that match the others in that chapter, you can still help
by going through the v4.0 chapter and adding comments about what needs
to be changed or added or deleted.

We're close to finishing this book. Let's get it done!

--Jean