Boundary
On the Boundary tab of the Incremental Solids form, specify whether a block model, coordinate extents, or surface extents will be used to generate the wireframe block from which incremental solids will be cut.
The Coordinate Extents grid can be used to enter the Easting, Northing and Z values for the wireframe boundary, or click Edit Extents to interactively set the required boundary. See Edit Extents.