To speed up consecutive MAT operations, programs may be written by placing the MAT operations (among other operations as well) on consecutive lines. Such a series of operations may be activated by pressing PREFIX before the first activation. An example of a typical MAT chain: n=48 m=10 Correlations of a n*m data matrix X MAT NAME X AS DATA / *X~DATA 48*10 MAT Y=CENTER(X) / *Y~CENTER(DATA) 48*10 MAT Y=NRM(Y) / *Y~NRM(CENTER(DATA)) 48*10 MAT R=MTM(Y) / *R~NRM(CENTER(DATA))'*NRM(CENTER(DATA)) S10*10 MAT KILL Y,MEAN MAT NAME R AS Correlations / *R~Correlations S10*10 MAT LOAD R,##.##,CUR+2 / R will be loaded from line CUR+2 onwards M = More information on MAT operations R = MATRUN operations (MAT chains saved in text files)