DropDemo contains an editable text area, a list, and a combo box that allows you to select the drop mode for the list. Select some text in the text area and drop onto the list. The selected list entry is replaced and that item becomes the current selection. This is how USE_SELECTION works and is provided for backwards compatibility but is otherwise not recommended.
Change the List Drop Mode to ON and try the same action. Once again, the selected list item is replaced, but the current selection does not move.
Change the List Drop Mode to INSERT and repeat the same action. The added text is inserted at the drop location. In this mode it is not possible to modify existing list items.
Change the List Drop Mode to ON_OR_INSERT. Depending on the cursor position, you can either insert the new text or you can replace existing text.