A tool existed in Geopak that could pick out the low point of a cross section to the left and right of centerline and construct horizontal and vertical alignments from that. This essentially automated the creation of a ditch profile along an entire corridor.

A similar tool now might check every X' along an alignment, identify the low elevation within X' Lt or Rt, and either mark the location horizontally or store the point vertically (or both).

This could allow someone to quickly mark out drainage paths or create ditch profiles.