As shown in the screen shot above the Remember the Milk iGoogle gadget displays tasks in a vertical list sorted by the completion date inputted by the user. Beside each of the tasks is a small arrow that when clicked, launches a drop down menu of options for that particular task.
These arrows afford clicking. The downward arrow informs the user that there is more information contained "underneath" or "below" it and as a result, he or she clicks it to access to the new information.
The arrows are also an example of classical conditioning. A drop down menu indicated by a downward arrow is very common in computer software and as such users " just know"
that it is necessary to click the arrow order to access the information it contains.
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