Snapping

When you move items around a page they will snap to the Page Margins and the centre points of the page. You can also set items to snap to other things:

Snap to Grid makes objects snap to the background grid, even if it's not currently visible.

Snap to Content makes objects snap to other objects. This is particularly useful when you want to line up different objects on the page.

Snap to Indicators makes objects snap to the guides and page margin.