The rectangular cards are used for visualized discussions and to explain details..
	The oval cards are used to label axis, to visualize headings of clusters, and for emotional statements..
	The circular cards are used to present, to substructure topics, and to mark individual contributions.
	The rhombus cards are used to illustrate structures and interdependencies between topics..
	The hexagonal cards are used to illustrate variations of a topic by clustering them as a honeycomb.