Well it's quite obvious to me that for adding or subtracting you need OSM data, so I have no doubts. it's like a cook recipe, if you don't have use it, you won't get the end result without it, adding or subtracting.
On Fri, 15 Nov 2019, 11:41 Christoph Hormann, <o...@imagico.de> wrote: > > This realization (of there being no fundamental difference between > subtracting and adding) is - as Rory already explained - not dependent > on specific details of the ODbL or the law but derives from elementary > logic. > > -- > Christoph Hormann > http://www.imagico.de/ > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk >
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