The tag `<tc:selectBooleanCheckbox/>` generate a classic boolean checkbox.

    <tc:selectBooleanCheckbox label="Checkbox" value="true"/>

In this example, the selected items are displayed in an outputfield after the submit-button is pressed.

    <tc:selectBooleanCheckbox label="A" value="\#{selectBooleanCheckboxController.a}"/>
    <tc:out label="Selected items: " value="\#{selectBooleanCheckboxController.selectedItems}"/>

The outputfields always shows the current value of the checkbox. With `<f:ajax render="output"/>`, the outputfield will be rerendered, after the value changed in the `<tc:selectBooleanCheckbox label="Character" value="#{selectBooleanCheckboxController.d}"/>`. The ID of the outputfield and the value in the `render` attribute of the ajax tag has to be the same.