A crossword component is the GRID of black and white squares that make up a crossword puzzle. It consists of a series of interlocking boxes, some of which contain clues and answers. The GRID is usually symmetrical and contains a variety of sizes and shapes of boxes. The GRID also contains a number of shaded squares, which are used to indicate the length of the answer. The GRID is the foundation of the crossword puzzle and provides the structure for the clues and answers.