Does drag support an image folder like click?
Yes. Drag, Drop, and all of the Eggplant commands and functions that work with images can accept a folder as an image collection. And nearly all will accept multiple parameters where each parameter is an image or a collection that are collectively treated as a collection (the exceptions to this that come to mind right now are WaitForAll, and the legacy commands DragAndDrop and MoveToEach, which treat each of their parameters as distinct images).