The document contains code in C, Java, and Visual Basic that allows a user to input values for a matrix, calculates the sums of the rows, columns, and diagonals of the matrix, and determines if the matrix is a "magic matrix" by checking if all the sums are equal. The programs prompt the user for the matrix dimension, accept input to populate the matrix, display the matrix, calculate the various sums, and output whether the matrix is magic or not along with the common sum value.