If the data doesn't come quickly enough, however, the presentation of the data will not be smooth. There are a number of competing streaming technologies emerging. For audio data on the Internet, the de facto standard is Progressive Network's RealAudio. Symmetrical designs often appear formal. An asymmetrical design is the arrangement of unequal weight elements onscreen.
Asymmetrical designs tend to be dynamic.
Creating an asymmetrical design is more challenging, as each individual element needs to be carefully considered and weighed against every other individual element onscreen. The tag without the slash is sometimes called a begin tag or a start tag. Third-generation site designers carefully specify the position and relationships of all elements on the page, retaining fine control of the layout. You should never bury information or desired information or desired functions more than three clicks away from the first click. . . . Moving backward or foreward through more than three screens increases the chance that the user will lose track of where they are at within the document.