Ah, I just realized that you're using Structural Modeler Ss1, and unfortunately I do not have that installed (I'm running Win 8.1). I went back to AECOsim Building Designer Ss4, the oldest version I am able to run, and the results were the same as Ss6. So it's possible that the older products did not include this ability, though I have no way to know for sure.
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