The Mosaic client communicates with HTTP servers. Mosaic can also communicate with more traditional Internet protocols such as FTP, Gopher, WAIS, NNTP, etc. Among the many formatting features, HTML allows Mosaic to display inlined images . If you are viewing this documentation from within Mosaic, you are reading an HTML file being served off of an HTTP server located at the University of Illinois. Mosaic also features unlimited multimedia capabilities.
More details are available in later sections of the documentation.