Change the screen space origin

I’m reading the book “Learn Unity for 2D game development”, and I don’t know how to do this:

“The camera has been aligned in the world so that the screen space origin is at the bottom-left corner; meaning positive X spans across the screen width, and positive Y across the screen height from bottom to top.”

I’m new on Unity and the book doesn’t talk how to do it.

By the way, I’m using Unity 4.3.3f1 on a Windows 7.

How can I align the camera to make screen space origin at the bottom-left corner?

I’m not sure what you mean. Your question is extremly short and lacks of details.

The screenspace origin is at the bottom left. Only the GUI space has it’s origin at the top left. UnityAnswers is for specific questions. Tell us what you want to do.

Feel free to edit your question or to post a comment below your question at add more details.