Use the Cutting Planes panel to manage cutting planes which may be positioned to slice through surfaces.
Current: Number of currently active cutting plane.
Clicking on name pops up a menu from which a new current plane may be selected.
X, Y, Z: Position of current cutting plane (offset from center). Plane may be moved with position box and height slider immediately above. Height (Z value) is only applicable if tilt is non-zero.
Radio buttons T, B, BL, GR, N control color of visible plane between two or more surfaces.
T: Color is the same as the color of top surface.
B: Color is the same as the color of the bottom surface.
BL: Color is blended from top & bottom surface colors.
GR: Color is grey.
N: Plane is not visible.
Reset: Resets to default values.
All Off: Turns off all cutting planes.
Rotate: Rotate around center North-South axis. (side to side)
Tilt: Rotate around axis in plane parallel to xy plane (front to back). If tilt is nonzero, plane surface is not visible.