UIScrollView: paging horizontally, scrolling vertically?

Question

How can I force a UIScrollView in which paging and scrolling are on to only move vertically or horizontally at a given moment?

My understanding is that

Answer 1

If you are using interface builder to design your interface - this could be done quite easily.

In interface builder simply click on the UIScrollView and select the option (in the inspector) that limits it to only one way scrolling.