A matrix is a rectangular area made up of rows and columns that form a grid. The intersection of a row and a column forms a cell. A matrix can contain various matrix items, such as labels, numbers, graphic objects, gadgets, or gadget items. A matrix can have scrollbars.

The Views Gadgets classes that implement matrices are IlvAbstractMatrix, IlvMatrix, IlvSheet, and IlvHierarchicalSheet.