User talk:Siebrand

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Josef Opitz[edit]

I protest, that you deleated portrait photo of Josef Opitz at my article. I have copyright for it, I published it as illustration of my article (Dana Stehlíková: Josef Opitz v Národním muzeu 1941 - 1945, in: Josef Opitz a umění na Chomutovsku a Kadaňsku 1350–1590. Sborník, eds. Renáta Gubíková — Markéta Prontekerová, s. 55-84. ISBN: 978-80-87898-11-6., all other internet users copyied my photo, but it is only a detail from larger photo of halfigure. Please, reverte it! Thank you -- Dobroš (diskuse) 1. 12. 2016, 22:32 (CET) — Preceding unsigned comment added by Dobroš (talk • contribs) 21:22, 01 December 2016 (UTC)

Permission to use figure in a book.[edit]

Dear Siebrand,

I am working with Prof. Steven LaValle to help obtain permissions for borrowing figures or pictures in his upcoming book Virtual Reality, to be published by Cambridge University Press. The book is online here:

We are hoping to include the picture of yours ( in this book (Chapter 5, Figure 5.13). Could we please have your permission for this? Thank you.

Please contact me at


Adam Warkoczewski —Preceding unsigned comment was added by (talk) 13:58, 20 January 2017 (UTC)

Problem with your DelinkerBot[edit]

Hello Siebrand. Could you please explain this action of your bot on a featured article? The file wasn't deleted on commons and the note written by the bot is actually mistaken. There are some worried users on (because the bot is pretty active and it would be a very time consuming action to check every edit). Thanks. --Lucas (msg) 11:20, 21 February 2017 (UTC)

I checked again and the edit was actually correct, sorry for bothering you. ;) --Lucas (msg) 12:36, 21 February 2017 (UTC)

Wrong substitutions[edit]

Hello your bot is leaving a lot of errors on it.wikipedia. E.g. This should have been this. Here the other corrections I've made. --Horcrux92 (talk) 12:40, 4 March 2017 (UTC)

Same error here --Horcrux92 (talk) 08:32, 4 April 2017 (UTC)
And here. And here. Do you read the messages or do you just ignore them? --Horcrux92 (talk) 19:58, 4 April 2017 (UTC)