The idea to get LibreOffice came to mind, and now I can open and edit the document also on my laptop. Even the rows of those Word like icons don't scare me any more. That was when I was even afraid to start my first laptop by myself, reason I went to the acquaintance. He was the one to press the ON button for me the first time, and told me I needed Word, which he then installed.
Old memories now.
On the Max I can make and edit documents in both portrait and landscape mode I see.
Looks like this is the happy end of a how to tutorial, and the opportunity of a new beginning for me: writing on the Max Carta with a BT keyboard... the same way I'm used to on my laptop.
Thank you once more for your effective help!