Thanks, Rolf. The trick was to carry over the key modifications in the drag operation from what was down when the mouse was pressed. I did have a note to myself indicating that Mac OS (and I guess also Linux) are different from Windows in that regard, failing to indicate the actual key status in the drag event. It's clearly a bug in Java on those systems. The bonus is that once you press the mouse, you don't have to continue holding all those keys down. :)
I don't know why it is so hard for me to get a clean build. This always means that the Jar file is corrupted. I tend to do a not totally clean build for these quick releases because it is so much faster. I probably should not do that. But, oddly enough, Monomer.getStructure() has *never* existed. Though called from Monomer, it is present only in super- and sub-classes of Monomer. That Jmol.jar file and, I guess, the applet Jar file are both corrupted. I'll have a new file out later today. Bob
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