CALL VARMACOV (cov, phi, theta, sigma <, p, q, lag>);
CALL VARMALIK (lnl, series, phi, theta, sigma <, p, q, opt>);
CALL VARMASIM (series, phi, theta, mu, sigma, n <, p, q, initial, seed>);
CALL VNORMAL (series, mu, sigma, n <, seed>);
CALL VTSROOT (root, phi, theta <, p, q>);