Pages grey background won't expand on the left side
I'm using Pages 9 due to me liking it better. Just preference.
Anyway, somehow today I managed to mess up the grey background and how it works. Usually I can grab either side of a pages document to expand and have the grey background expand out. Here's a picture to make it more clear: http://i.imgur.com/cp00rXj.png
iMac, OS X Mavericks (10.9.5)