I can only edit one page! Why?

[Ingrid]

I can only see one page on the screen. If I try to write more than one page
the words disapear. If I make the font size smaller the words I have written
which were on "the invisible page" appear.
What have I done? And what can I do to get it back to normal?

 

[Suzanne S. Barnhill]

Go to Format | Columns and click on the preset icon for One, then click OK.
If this solves the problem for a given document, you will need to do this in
Normal.dot; see
http://word.mvps.org/FAQs/AppErrors/BlankDocNotBlank.htm for instructions.