This is the most straightforward way of combining two objects. It is the union of the two objects.
MINUS takes the first object and subtracts any part of it that is overlapped by the second object.
AND gives the intersection of the two objects.
If a red object is subtracted from a blue object using MINUS the resulting object will inherit the colour blue. However if it is linked using PAINTMINUS the surfaces in the resulting object that were surfaces from the subtracted object will be red (the colour of the subtracted object).
If a red object is intersected with a blue object using AND the resulting object will be blue. However if it is linked using SURF_AND the surfaces in the resulting object will inherit the colour of the object that they were a surface of.
Examples with the link operators are shown in Table 4 on pg. 
.
