Sort starting point of Brep/curve?

[Joseph_Oster]

I posted this yesterday where the white group sorts curves by their start points:

Dispatch data branches with no duplicate points

Your goal isn’t clear to me but I wonder if you’ve considered that your “curves” (lines) are in random order and their start points (directions) are split, three starting at the top and three at the bottom? The white group (below) sorts the curves and the cyan group splits them into two groups. ‘A’ slopes down to the right and ‘B’ slopes up to the right. Then these are used as inputs to CCX to return only the nine intersection points in the middle, ignoring the end points. [DataBranches_202…