Microsoft BOB is a Windows 3.1 graphical shell intended for novice users. It presents your desktop as a series of "rooms" with various selectable objects, and assists you with a friendly animated guide. It features vector based graphics that scale to any size or resolution screen, supports user profiles, and includes rudimentary editor, calendar, address book, and checking programs. It was created as a response to Packard Bell Navigator and is somewhat comparable to Apple At Ease and 3DNA.