e1a3a9e2_eb_Design_Blog_Web_Design_Blog__Example_
[Type:] Paralel [Important:] Use this only if you have a practical use for it, meaning that is should add something to the visitors experience. Normally a visitor wants to keep control over his surfing. [Example:] 
Paralel structure is quite simply where you present different kind of information at the same time. The most common example is the use of pop-up windows. To find useful examples of this today is quite hard. The common misuse of this today is to open windows to present meaningless information or advertising. Useful Paralel structure is when you surf and open a link in a new window to keep the old content visible, in a search engine for example. Good use is also to open external links from your site in a new window to keep the users on your site.
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Example: