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Z-clip Planes define near and far distance boundaries outside of which the objects will not be considered by the render calculations. Please see the Z-clip planes page for more details.
Boolean
This object property lets you specify an objects bounding box/bounding sphere, or plane as a cutting object in your scene. Any objects inside the cutting objects bounding box/sphere, or behind the specified plane will be rendered as if it was hidden from the camera, just as with the Z-clip feature of the cameras. The two big advantages compared to z-clip of course is that you can freely move the camera without affecting what gets clipped, and also that you can create different sizes and shapes to act as clipping shapes.
Bounding box
This option takes the bounding box size of the object and uses it as the cutting shape.
Bounding sphere
This option takes the bounding sphere size of the object and uses it as the cutting shape.
Planes
This option is easiest to use if the geometry is already a plane. It will make everything in the negative direction of the chosen local axis (XY, YZ, ZX), hidden to the camera. You can rotate the object to decide which way the negative axis is pointing.
Exclusive emitters