Writer 4.2 chap 6 documentation

Hello,

Attached are modifications I did on chap 6 of version 4.2 from
https://wiki.documentfoundation.org/Documentation/Publications

I believe I have re-phrased some paragraph for clarity. I let in red parts,
which I still found too complex.

To track changes, just do a document compare against original.

Philippe

Link valid till 28/01

http://we.tl/PgtUMwmv4F