This page describes the JavaScript API that the Topology 2 View provides to allow contributed application code to integrate with the Topology View , and provide additional functionality to, the topology view.
Note that this API pertains to both the "ClassicRegion-aware" Topology View (topotopo2) and . For the newer "Region-awareClassic" Topology View (topo2)., see here.
Topology Overlay Service
TheĀ Topology Overlay Service is a JavaScript module that provides the client-side API for registering new "topology overlay" components.