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Hi everyone, I have been recently relying on XDS quite a bit, but at the same time worrying about how XDS treats overlaps. We had one dataset that both HKL2000 and Mosflm would show to have severe overlaps, as expected due to unit cell parameters and the unfortunate crystal orientation in the loop. We always ended up with completeness percentages in the 70's. XDS can find the same lattice, index and scale the data, but yields a 100% complete mtz (and a nice structure). Without the HKL/Mosflm-like GUI, it is difficult to assess the fate of the overlapped observations in XDS. What I could see with VIEW was that some observations were being divided into several ovals, probably different reflections, but I'm not very certain. So, the basic question is, how does XDS treat overlaps? I could not find in the documentation an answer to this question; the single mention of overlaps I could find tells me that XDS can recognize overlaps, but does not tell me if it rejects them, or divvies them up into separate reflections, and if that is the case, how does it divide them, and how reliable is that? Depending on how it divides the overlaps, could that affect commonly-used intensity stats and distributions? Thanks, Engin