Thise artikel concentrates on forms of multimedia in which a computer is involved, one way or another. The computer either present information directly or controls the presentation of information from some other source, such as CD-ROM or videodisc Some would prefer that the term multimedia refer to the entire system, incuding hardwere, softwere, and document, used to sommunicate with the system user. The term document here refers to the actual data file or files storing the text, grafphics, and sound. The combination of hardware, application software, and document is probably wahat most educators now understand multimedia to be.