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Tesla-Tipps
Tesla Model 3 besichtigen und mitfahren in Baden-Württemberg bei Freiburg im Breisgau
Firefox switches config from mozilla.cfg to policies.json
Howto use uMatrix
Howto build ZFS from source in Devuan
Howto speedup Windows 7 updates (especially after reinstall)

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external links:
mindblowing physics:
what is light?
the universe is not locally real