In SAS 9.4M5, a change was made to the LINES plot. You can read about it in  "Introducing the new SAS/STAT lines plot" and "Graphs for multiple comparisons of means: The lines plot" As mentioned in the second article, the LINES plot can be misleading if you have unbalanced groups. In my opinion, the diffogram is a more faithful visualization of the test. The diffogram is explained in this article.   By the way, if you want the old "table with letters," you can get it by turning off ODS graphics. But I don't recommend that tabular display b/c it can be misleading. ... View more