Lest you conclude there’s nothing more to forms than a series of independent, isolated input controls, this section focuses on common interaction problems requiring multiple input controls working together. These problems include the following interactions:
Selecting a single item from a small, medium, or large number of options
Selecting multiple items from a large set of options
Selecting a date
Although it would be impossible to anticipate or explore every interaction problem, the analysis of these problems should give you an understanding of how to approach and solve complex interaction problems in general.
One of the most common input operations in a Web application ...