Easy-to-use help screens should be provided. Many PC help screens have additional
topics that may be directly selected using highlighted text displayed on the
first help screen. These hyperlinks are usually in a different color, which makes
them stand out in contrast to the rest of the help text. Remember to use icons or
text in addition to color coding in order to reach the largest number of users. Many
of the newer GUIs often incorporate tool tip help, displaying a small help message
identifying the function of a command button when the cursor is placed over it.
The other side of communication is that the computer should understand what
the user has entered. Hence, all data entered on the screen should be edited for
validity.