Once you drop the shrunken window on the tab of the other window, you end up with a multi-tabbed version of Windows Explorer.
You then drop the shrunken window on the tab of the other window and instantly you have a multi-tabbed version of Windows Explorer, as shown. You can use [Alt] along with the left and right arrow keys to switch tabs as well as simply clicking tabs.
Greg Shultz is a freelance Technical Writer. Previously, he has worked as Documentation Specialist in the software industry, a Technical Support Specialist in educational industry, and a Technical Journalist in the computer publishing industry.