y old selections will be deselected automatically, regardless of the behavior type of the list. It takes a flag indicating whether the list should be in its indeterminate state. If the GenItemGroup is scrollable and exclusive, this message will usually ensure that the list will automatically scroll to the selected item. This message also clears the object's modified flag.</P>
<P>
<CODE>
MSG_GEN_ITEM_GROUP_SET_MULTIPLE_SELECTIONS</CODE>
 sets a a group of selections for a GenItemGroup. Any previously selecte