Macintosh computers offer more flexible monitor support. Adding another monitor to your Macintosh is easy. Many users want to increase their on-screen workspace by adding extra monitors, to handle larger documents such as spreadsheets or desktop publishing pages. Because of the superior design of the Macintosh, the operating system will automatically treat the multiple displays as a single, contiguous workspace, so you can drag objects from one screen to another, or even work across screens on the same document. All you have to do on the Macintosh is add a video card for each extra monitor. The Mac OS will automatically recognize the extra video cards. Standard PCs aren't designed to support more than one monitor at a time, so adding a second monitor is much more expensive and complex. Windows users need to buy a special video card that costs hundreds of dollars more than standard cards. And since these PC cards may not support the monitor you already have, you might also have to buy two new monitors. Macintosh computers can change resolutions and color depth on the fly. With a PC running Windows 3.1 or Windows 95, you must restart Windows in order to change the number of colors displayed.