Jean-Marie Favreau

Other bookmark tools are providing a first page with all public content, then subpages for public content for each user: https://github.com/sebcode/b It could be a nice feature.

https://github.com/w8r/martinez/ is a very good tool to compute intersections between polygons. Might be a good approach.

A work in progress implementation of such clipping: https://github.com/ACTIVmap/svg-to-stl

An interesting alternative way should be to have a local cache of the already used phone numbers...