How to select all the vertexes with border select? Hi guys I'm new to Blender, and have this question about selecting vertexes.

I tried to select all vertexes within a rectangle region by drawing the rectangle with mouse after pressing B in Top View, but I actually ended up with only selecting the vertexes that are closer to me. 

Here are my steps:


After pressing B I selected multiple vertexes with drawing a rectangle:

I deleted them with X, but I see some in that region actually still exist:

You can see I actually only selected the upper 2 which were closer to me:



So is there a way to really do this? I'm using Blender 2.71, but I saw Jonathan could do it in this video (but he must be using an older version): CGCookie tutorial: Modeling a Shipping Container
That is the regular behaviour of Blender. By default "Limit selection to visible (clipped with depth buffer)" is enabled.

When you disable the button I marked in the screenshot, select the vertices again, all four vertices will be selected.