White space above a vertical variant

[gwpriester]

You can add a page color until you have extended the top of the page then once it is where you want it, reset the page color.

[Acorn]

A quick check is Window > View Quality > Outline.
In XWD(P), it is Alt-W-Q-O and back to Very High quality is Alt-W-Q-V.
If you set up a New View, you can just move from one to the other and see your page in outline.
I find adding Guides is much cleaner in outline so I keep that view with Guides showing as well.

Acorn