The checkedfield() function returns a boolean value indicating whether a specified position in a multi-select list box is selected or an item in a button drop list is checked.
checkedfield(field, position)
• field – The name of the multi-select list box or button drop list.
• position – An integer indicating the position of an item in the multi-select list box or button drop list.
A boolean. The value true indicates the item was marked, while false indiciates it was not.