The `<tc:selectOneListbox/>` create a list of entries, where only one entry can be selected. Items can be added with `<tc:selectItem/>` or `<tc:selectItems/>`.

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If the number of rows is not set, die height of the list depends on the number of entries. The number of rows can be set by the `size` attribute. A list has at least two rows, therefor values less than two have no effect.

    <tc:selectOneListbox label="List" size="3">
      <tc:selectItem itemLabel="Alpha"/>
      ...
    </tc:selectOneListbox>

Select a river in the list. After pressing the submit-button, the length of the river is shown in the outputfield.

Items are added with `<tc:selectItem itemLabel="Nile" itemValue="6853 km"/>`.

Select a mountain in the list. The height will be displayed by `<tc:out id="selectedMountain" .../>`. The `<tc:selectOneListbox/>` contain a `<f:ajax render="selectedMountain"/>`, which rerender the outputfield.