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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

Compiler Warning (level 1) C4821

Error Message

Unable to determine Unicode encoding type, please save the file with signature (BOM)

The compiler could not determine the encoding type for a file. To resolve this warning, save the file with a byte order marker. See Managing Files with Encoding for more information.

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