options ls=80; 

title1 'Means Comparison';

data one;
 infile 'c:\saswork\data\tensile.dat';
 input percent strength time;

proc glm data=one;
 class percent;
 model strength=percent;
 means percent / alpha=.05 lines bon snk tukey;
 means percent / lines duncan lsd scheffe;
 means percent /dunnett;
 means percent / lsd clm;
run;