Example of OpenLayers using Snap/Split and GhostNodes to keep the junctions of lines as a network.

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snapping, splitting, GhostNodes, network

Shows usage of snapping, splitting and GhostNodes to keep the junctions of lines as a network.

Try:

Select "Modify Feature" tool and modify a end point of any line, the other lines still joined if "Nodes" button is on.

View the ghost-nodes.js source to see how this is done.