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Red copyrightThis is a screenshot of a copyrighted video game graphic. It is believed that screenshots may be exhibited on Half-Life Wiki under the fair use provision of United States copyright law.

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current19:34, June 21, 2012Thumbnail for version as of 19:34, June 21, 2012940 × 720 (479 KB)URL (Talk | contribs)(Automated) PNG recompression (669,084 -> 490,822 bytes)
22:55, April 24, 2011Thumbnail for version as of 22:55, April 24, 2011940 × 720 (653 KB)McFlurryMax (Talk | contribs){{Information |attention= |description=The Aperture Science Pipe Networks throughout ''Portal 2''. |source=''Portal 2'' |author=Valve |filespecs=Cropped |licensing={{Gamescreenshot}} |other versions= |cat artist= |cat subject=[[Category:Apertu

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