/usr/share/dx/samples/scripts/Supervise is in dxsamples 4.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19  | macro main() {
object = Import("cloudwater");
object = Isosurface(object);
//create a window using SuperviseWindow
where, size, events = SuperviseWindow();
//set a default camera
defcam = AutoCamera(object);
// mode 0 is rotation mode
mode = 0;
obj, cam, wh = SuperviseState(where=where, defaultCamera=defcam, 
                              object=object, size=size, events=events, 
                              mode=mode);
Display(obj, cam, wh);
}
main();
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