A cool new idea. I can think of dozens of applications. Although, when I first read this, I thought of Gallegher's comments on how governmant was dumb. He thought it was dumb that the government department in charge of national parks, forests, and dams was called the Department of the Interior. Figured that it should be staffed with decorators. This stuff is just the trick for the interior decorator in charge of Hoover dam. "Masonry! Masonry! Masonry! Windows! Let in some light!" Now the maasonry CAN let in some light.

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