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when toggle format what by license comment
Dec 29, 2019 at 18:00 comment added Mark Wildon Thank you for a very nice answer. It deserves more than my up-vote.
S Dec 28, 2019 at 18:59 history answered Per Alexandersson CC BY-SA 4.0
S Dec 28, 2019 at 18:59 history made wiki Post Made Community Wiki by Per Alexandersson