It includes prompts with scripts to be read when appropriate. Usually, demos provide users with an opportunity to try certain aspects of a product. A telephone directory is a reference. So is the Physician's Desk Reference, as are the programming references provided with software. Programming references list all of the commands that programmers can use to create their own applications using that software .
References promote self-directed learning.
Learneres look up specific piece of information. The subject might be broad, such as all of the commands used for copying information or all the medications used to treat influenza. The subject might be tightly defined, such as the use of global characters with the DOS command, diskcopy, or the side effects of a certain influenza vaccine on patients with pacemakers. Users generally do not read references in their entirety. For example, if a programming language has 118 commands, users expect listings for each.