A two-dimensional thing can only be mapped into a linear memory or storage as base-offset. Let us construe a Cp1 as offset address. The same offset address — Normative Node (Cp1,Cp2) — in another segment directs to another physical memory cell (German: Speicherplatz).
Cf. this (German) Wikipedia articel about segementation.
Cp2 is the zero of a new Cartesian coordinates system in the same space.
x-axis: the Cp1 of potential 'children' (Normative)
y-axis: the Cp0 of potential 'children' (Associative), i.e. the other Cp side-by-side (left side or before) the Cp1
Each such 'children' itself has another Cp2 streching another Cartesian coordinates system into the same 2D space of reference.