Boxes And Arrows : The Design Behind the Design

Placement of OK, CANCEL buttons – There have been a long-standing discusses about the placement of these buttons.
It principally comes down to different contrary viewpoints…

One viewpoint is …, that the OK button have to be placed to the left of the CANCEL button. The reason for this first opinion is because we read from left to right, top to bottom, buttons should be placed left to right in order of importance, importance being how likely a button will be used.
The second viewpoint says that because we read from left to right and from the top to bottom – in most parts of the world. The left side is typically implicit as being BACK and the right side is implicit as being FORWARD. When we look at our browsers it´s almost the same – the BACK is on the left and FORWARD buttons on the right have arrows – pointing left and right in that order. The function Cancel is a back action and OK is a FORWARD action, the OK button should be to the right of the CANCEL button.