Center of Visual Impact

Imagine yourself reading your daily with that favorite cup of coffee in your hand or browsing through a webpage at free time on your favorite subject. Do you start reading from the left to right, top to bottom, or there is this one thing that attracts your attention first? A colorful photograph or a headline in a comparatively larger font which might not exactly be placed at the left top.
A good designer can actually guide you through the page in a particular way by using different design elements as an attention grabber. This attention grabber is termed as the CVI – Center of Visual Impact, a concept that Mario Garcia writes about in his book Pure Design. CVI is about the use of one visual element that is at least three times larger than others on the page. http://poynter.org/dg.lts/id.33/aid.3251/column.htm
The CVI concept is very important as it plays a major role in shelf visibility of the product. It is not only restricted to News papers or magazines but also proves to be of use in web designing, package designing and Interior designing.
And, yes there should be only one CVI in a page. Else it will lead to confusion.