Users with less skill in using the computer or doing their tasks with a computer
require more communication. Web sites must display more text and
instructions to guide the user through the site. Intranet sites may have less dialog,
because there is a measure of control over how well trained users are. Internet
graphics should have pop-up text or roll-over descriptions when images are used
as hyperlinks, because there may be uncertainty in interpreting their meaning,
especially if the site is used internationally. Notice that EU guidelines for the display
of Web graphics requires that all images be labeled, so that visually impaired
users will be able to hear written descriptions announced through special software.
Status line information for GUI screens is another way of providing instructions
for users.