How to Fix Microsoft Word's Small Document Display Issue?

[WWGD]

Hi all,
This sounds like a joke, unfortunately it is not:
Word was working OK until I received a Word file from a phone , Android , I think. Then
somehow it ended up like this :

i.e., ocupying just a small subset of the total usual space.
Any ideas on how to get it back to full-page format?
Thanks.

 

[anorlunda]

At the lower right, just above the 3:34 PM time, there is a slider that controls zoom. There is a tic mark on the slider for 100%.

There are also drop down menus and shortcut keys to control zoom. If I remember right CTRL-minus sign and CTRL=-plus sign.

 

[WWGD]

At the lower right, just above the 3:34 PM time, there is a slider that controls zoom. There is a tic mark on the slider for 100%.

There are also drop down menus and shortcut keys to control zoom. If I remember right CTRL-minus sign and CTRL=-plus sign.

Thanks so much, Anorlunda.