Sets the default increment value for the Section Offset and Slice Thickness controls.
SECTIONSPINNERS (Command) Find
Sets the default increment and reduction values for the Section Offset and Slice Thickness controls in the Section Plane tab 
Adjust Slice panel.
Offset Distance Increment
Sets the default number of points that the section offset value increases or decreases by in the following control: Section Plane tab Adjust Slice panel Section Offset.
For example, if you set the Offset Distance Increment value to 6.0000, clicking the up arrow once in the Section Offset control, increases the Section Offset value by 6.0000 points.
Slice Thickness Increment
Sets the default number of points that the slice thickness value increases or decreases by in the following control: Section Plane tab Adjust Slice panel Slice Thickness.
For example, if you set the Slice Thickness Increment value to 2.0000, clicking the up arrow once in the Slice Thickness control, increases the section slice thickness by 2.0000 points.