This manual is basically the same as the 2011 version. However, it includes significant revisions made to the 64 bit versions (Linux and Mac) in 2013-2017.
None of those features are available in the "new" Windows version, which is basically obsolete now. So if you are using Windows, skip Appendix 6. Also, none
of the revisions apply to the old 32 bit versions of Linux and Mac. They are obsolete.
The pdf version, the preferred manual is here.
The HTML version of the older 2011 manual was produced from the TeX version by the program TTH (TeX to HTML),
To see this older manual,