<overlay> <grid> <columns> <column/> </columns> <rows> <row><textbox id="textbox" required="false" /></row> <row><box><description value="Must be checked" /><checkbox id="checkbox" label="Must be checked" required="true" /></box></row> <!-- Not working yet <row><int id="int_min" min="5" label="Must be at least 5" /></row> <row><listbox id="select" options="Select one" required="true" /></row> --> <row><button label="Check" /></row> </rows> </grid> </overlay>