What is DVD? Such a simple question, but one that is far more complicated than it appears. Even the acronym is confusing. Some companies say DVD stands for 'digital video disk', others use 'digital versatile disk'. The latter is more accurate. While many think of DVDs as the latest thing in home theatre, there is much more to them than that. With the arrival of the digital versatile disk, there finally is the possibility of a single storage medium that will meet all needs. Imagine walking into the supermarket and grabbing a pack of blank DVDs. Some will record soap operas on your DVD player/ recorder, some will store data on your computer, while others will record music. Finally, some will video-record your child's birthday party. Yes, there is even a DVD camcorder under development. Basically, a DVD is an enhanced CD-Rom. The disks are of the same size. DVD drives also can read all CDs except home-recorded CDs, such as those in CD-R or CD-RW formats. Like CDs, DVDs can play movies and music, and can carry other digital data. They also are recordable, although the only DVD recording units - called DVD-Ram - available are for PCs. They are expensive, at US$10,000, and hard to find. DVD machines to replace the VCR are planned, but will not be on the market for a year or two. The cause of the delay is legal rather than technical, as Hollywood studios do their best to limit the inevitable flow of pirate DVDs.