Boolean
These are the Boolean operations for geometry:
Union?The Boolean object contains the volume of both original objects. The intersecting or overlapping portion of the geometry is removed.
Intersection?The Boolean object contains only the volume that was common to both original objects (in other words, where they overlapped).
Subtraction (or difference)? The Boolean object contains the volume of one original object with the intersection volume subtracted from it.
In easyspeak.... its a rough way of sticking to objects together... (not very clean....) But a good way to cut holes into things...
accessable through:-
Select an object. > Create panel > Geometry > Compound Objects > Object Type rollout > Boolean
Select an object. > Create menu > CompoundObjects > Boolean
Select an object. > Tab panels > Compounds tab > Boolean Compound Object
Good Luck