In this case BlueTrip takes the grid layout tools of BluePrint and the typography tools of Tripoli and ignores the rest.

The tool acknowledges that responsive design is here to stay. Dreamweaver now features an enhanced fluid grid layout that allows web designers to construct web designed and responsive sites visually.

Of course whether or not multi-column layouts on the iPad (or any other web browser) are a good idea is open to debate. Multiple columns combined with scrolling often makes for a reading nightmare.