/usr/share/dx/samples/scripts/Collect is in dxsamples 4.2.0-1.
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 20  |     // Import the data
electrondensity = Import("watermolecule");
    // Partition the data
electrondensity = Partition(electrondensity);
    // Create a camera
camera = AutoCamera(electrondensity,"off-front"); 
    // Create an isosurface at a value of 0.3
iso = Isosurface(electrondensity,0.3);
    // Give the isosurface an opacity of 0.3
iso = Color(iso,opacity=0.3);
    // Create a maptoplane through the data
plane = MapToPlane(electrondensity);
    // Color the plane
plane = AutoColor(plane);
    // create a bounding box and color it spring green
box = ShowBox(electrondensity);
box = Color(box,"spring green");
    // Collect the plane with the isosurface with the box and display
collected = Collect(plane,iso,box);
Display(collected,camera);
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