Button View was designed for novices and gives the Finder a more user-friendly look. One click on the embossed big button open the icon. Yet, it can also be dealt with as a normal Finder icon: click once on the name to change it, and click and drag on the name to move it. And it can also be selected in a normal marquee selection.
When an icon is selected, the icon and the name appears dark or inverted.
Button View is no longer present in Mac OS X.