Relevant considerations:

An informative interface provides the user with sufficient information at all times. By sufficient information we mean;

• Instructions should be distinguishable from data.

• The user should be able to distinguish optional from required entries.

• The results of user actions should be visible in the interface without delay.

• Acknowledge user input and progress, indicating percent done or hourglass while waiting, and showing changes immediately after.

• Echo user entries instantaneously.

• The user should be able to identify all the data displayed.

• The interface should provide information on how to continue.

• Display all available/valid options.

• Display continuing page indicator.

• The user should be able to determine the settings of all the dialog parameters.

• Have an indicator displaying the application/system status.

• Display transaction type.

• Show the units for each variable in the heading or the label associated with it.

• Show default values.

• Show correct input format/syntax.

• Indicate length of field.

• Display heading on each page.

• List heading defines list.

• Display headings on each page.

• Keep display uncluttered.

• User should be able to access help at each stage in the process.