Abstract: A system for automatically transforming a graphical user interface including a first data server containing a first raw data structure, a second data server containing a second raw data structure, a storage device containing a third raw data structure, and an interactive graphical user interface generation server including a processor and a non-volatile storage device. The graphical user interface generation server is configured to retrieve the first raw data structure and the second raw data structure, and generate a first processed data structure. The graphical user interface generation server is configured to retrieve the third raw data structure and generate a second processed data structure. The graphical user interface generation server is configured to transform a plurality of selectable outlines displayed on a graphical user interface in response a user selecting the first selectable element and/or the second selectable element.

Abstract: The invention relates to an apparatus for brushing chalk powder off from an eraser surface of a blackboard eraser in which elastic brushes attached to rotatable shafts of rotatable bodies are brushingly engaged with the eraser surface and are rotated in forward and reverse directions by a motor so that the chalk powder removed from the eraser is collected in chalk powder receiving containers. After the passage of a set time interval, the operation of the apparatus is automatically stopped. A chalk powder containing eraser and the now clean eraser inside the apparatus can be exchanged. Thus, dispersion of powder into the room is prevented.