[OSM-legal-talk] Do overlays have to be released under ODbL?

[Tobias Wendorff]

Am So, 13.03.2016, 13:27 schrieb Martin Koppenhoefer:
>
> yes, you won't have to release your data if you remove similar data from
> OSM before rendering though.

So this means: layers with data under a properity license including features,
which already appear partially on a the official pre-rendered OSM tiles,
have to released under ODbL ?