Option to show a grid of IDs into the indexed region

[ppKrauss]

Is an idea to reuse all script for another kind of interface, that is usual for teaching or to analyse grid behaviour. The main problem is the XML SVG language, it is ugly for put text into rectangles, but perhaps D3 (and x,y reuse) offers a better solution.

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Using grid with geographical map, examples: leaflet with geohash and quadtree, old google-map with geohash, ...