C Cell (Geometry Section)
Represents different information in different rows. This table describes the C cell based on the row in which it's located.
Row  Description 

EllipticalArcTo 
The angle of an arc's major axis relative to the x axis of its parent. 
NURBSTo 
The first knot of the nonuniform rational Bspline (NURBS). 
SplineStart 
The last knot of a spline. 
Ellipse 
An x coordinate of a point on an ellipse; paired with the y coordinate represented by the D cell. 
Remarks
To get a reference to the C cell by name from another formula, or from a program using the CellsU property, use:
Cell name: 
Geometry i .C j where i and j = <1>, 2, 3... 
Geometry i .C1 (Ellipse row) 
To get a reference to the C cell by index from a program, use the CellsSRC property with the following arguments:
Section index: 
visSectionFirstComponent + i where i = 0, 1, 2... 
Row index: 
visRowVertex + j where j = 0, 1, 2... 
visRowVertex (Ellipse row) 

Cell index: 
visEccentricityAngle (EllipticalArcTo row) 
visNURBSKnotPrev (NURBSTo row) 

visSplineKnot3 (SplineStart row) 

visEllipseMinorX (Ellipse row) 