I did what you said and the letter expanded vertically to fill the screen but still on the left hand side as before.
To RichieME. Before I opened this last message of yours I had found the solution, but as my computers speaks French I may be translating not quite right. In View there is further along a choice of one page or two pages. If you open at two pages with a blank sheet, one sheet only appears at the left. When you reach the second page in writing the second page appears to the right, so all is centred. The screen must have arrived set for two pages: when I reset it for one page, the page appeared in the centre just as I wanted. Similarly a lanscape page appears centrally. Thanks for trying.
I want to pay RichieME but Danh ends up by asking for pay & tip. What do I do now?
I don't know what is wrong now but I cannot find a way to pay and leave.