This interaction method involves associating predefined descriptors with designated areas. A user selects a descriptor and moves it onto a corresponding target area. An example is labeling parts of a diagram, such as identifying regions of the brain or components of a machine.
This approach facilitates active learning and reinforces understanding through direct manipulation. It allows for immediate feedback and assessment, making it useful in educational and training settings. Historically, this type of interaction evolved from physical labeling activities and found its way into digital environments with the advent of graphical user interfaces and touchscreens.