How to break out or customize loop of doctype_row.html?

When a Web View is made for a DocType, two boilerplate files are created: doctype_row.html and doctype.html.

The doctype_row.html only provides one column to present the table rows. There is so much space wasted in the rest of the page, not to mention the scrolling inconvenience for short lists.

Is there a way to make it display the results in more than one column? Or, a way to break out of this loop?