The Front Panel contains the following controls that act as drop zones:
Some controls act as drop zones as specified for the applications that they run. For example, the File Manager control will display folder paths dropped on it, the Text Editor control will open files dropped on it, and the Web Browser control will open URLs dropped on it.
The Add Icon control on each subpanel acts as a drop zone (as explained in "To Add an Application or Other Icon to a Subpanel").
The Activity indicator (globe) control on the main panel is a drop zone for all registered data types, invoking the default actions for each object dropped on it. For example, dropping a URL displays the URL in a browser, and dropping a folder displays the folder contents in File Manager.