The chord of the lines (start to end points) as an McLines.

A McMeasure object.  

object.mlLnChordAsLine

The mlLnChordAsLine Property syntax has these parts:

The chord line will differ from the line feature itself only for polylines (mLnSegmentCount greater than 1). The measurement Value is a McLines filled with un-calibrated coordinates of the line feature chord line (the line segment from the start point to the end point). All Value accesses reference the same McLines object, only its contents change.