mullion family not able to be edited - SERP Analysis

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https://www.reddit.com/r/Revit/comments/66osxr/mullions_on_curtain_wall_ends_soo_close_to_having/

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https://discourse.mcneel.com/t/trying-to-fix-curtain-panel-by-face-issue/181120

https://bimopedia.wordpress.com/2013/04/02/curtain-wall-mullion-corners-in-revit/

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https://ukcommunity.arkance.world/hc/en-us/articles/21550926465938-Revit-Tip-Creating-a-Detailed-Curtain-Wall-Mullion-Family

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https://get-information-schools.service.gov.uk/Establishments/Establishment/Details/143992

https://en.wikipedia.org/wiki/Mulholland_Drive_(film)

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