According to the help menu, the 'Windows' menu is supposed to have the following options:

Cascade, Tile Horizontally, Tile Vertically, Minimize All, Arrange All

But instead it just has 'Next Window' and 'Previous Window'. I cannot figure out how to view two or more opened files side by side. I have used this feature extensively in other editors. Where are these controls?

That's a good point denman however, you can float your windows to achieve the same result. Right-click on the tab.

Thanks for the tip. Still not quite as user-friendly, but it will do...