updated way to item of menu
added explanetions
added section about protection of whole document
ubdate formattig
Set 3: reviewed and rewritten
a lot of place have smoll chenges
Change-Id: I79753b4d656cbb0e173bf0372dc195840609c0cd
Reviewed-on: https://gerrit.libreoffice.org/30967
Reviewed-by: jan iversen <jani@documentfoundation.org>
Tested-by: jan iversen <jani@documentfoundation.org>