Cactus Code Thorn IDBrillData
Thorn Author(s)     : Carsten Gundlach
                      Miguel Alcubierre
Thorn Maintainer(s) : Carsten Gundlach <gundlach@aei.mpg.de>
                      Miguel Alcubierre <miguel@aei.mpg.de>
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Initializes Brill wave data.