Hi Team, How are XYZ coords represented in ChimeraX? I have a volume of 794x794x272 sampled @15Å/px. When I place markers in the volume and save the resultant marker file, the coords for the points are as follows- <marker_set name="markers"> <marker id="1" x="6950.3" y="6659.4" z="2010" r="1" g="1" b="0" radius="15"/> <marker id="2" x="6977.7" y="6381.5" z="2010" r="1" g="1" b="0" radius="15"/> <marker id="3" x="9747.8" y="3926.7" z="2010" r="1" g="1" b="0" radius="15"/> </marker_set> Such large numbers seem to imply that the dimensions are measured in physical units (Å in this case). Is this correct? Best, Pranav -- Pranav Shah Postdoctoral Research Fellow. Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK