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In designing Complete We wanted to make the design patterns consistent throughout the entire solution.
For example, when looking at a Contact–whether on the Contact layout or as a related contact on another layout–we wanted that presentation to be the same.
The pattern we established in the main Contact layout would therefore be replicated throughout the solution so users could always recognize the interface for “Contacts”.
Before FileMaker 13, this would be a challenge because there would typically not be enough real estate to show detailed Contact information in other contexts–on a Project layout, for example–without intruding on the Project information or seeming out of place.
With 13, pop-overs and slide panels give us a lot more flexibility.
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Also look at http://www.scoop.it/t/learning-filemaker?q=virtual+list
or
http://www.scoop.it/t/learning-filemaker?q=selector