In an HTML form, a SELECT input allows the user to make a selection from a list of choices. The addition of the MULTIPLE keyword to this tag allows more than one entry to be selected from the list of choices (usually by holding down Control or Shift while selecting elements in the browser). Optionally, a SIZE attribute can be used to set the size of the list box used to present the choices to the user. For more information refer to your favorite online or printed HTML reference on forms.

When multiple items are selected on this type of form element, they will each be passed to the web server with the same name. The decoding method has to be smart enough to recognize multiple values associated with the same name.

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