ROWBIND

ROWBIND(x;y) stacks matrices x and y vertically i.e. forms the matrix [x′y′]′. The setting for x or y may also be a variate (representing a single-column matrix), a scalar (representing a one-by-one matrix) or a pointer of variates (specifying a matrix with a column for each variate in the pointer); x and y must have the same number of columns.