projection tests

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<blockquote class="wp-embedded-content" data-secret="ZHLXMb4nYc"><a href="https://www.fuchsundbaer.de/?p=1633">projection tests</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.fuchsundbaer.de/?p=1633&#038;embed=true#?secret=ZHLXMb4nYc" width="600" height="400" title="&#8222;projection tests&#8220; &#8212; fuchs &amp; bär" data-secret="ZHLXMb4nYc" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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