for consistency with the regionToCell topo set source and splitMeshRegions and provides more logical extension to the multiple and outside point variants insidePoints, outsidePoint and outsidePoints.
Reference: Duisburg Test Case (DTC) el Moctar, O., Shigunov, V., Zorn, T., Duisburg Test Case: Post-Panamax Container Ship for Benchmarking, Journal of Ship Technology Research, Vol.59, No.3, pp. 50-65, 2012