A known failures list (KFL) is a file that contains a list of tests in a test suite that are known to fail for some reason. The list contains path names that uniquely identify test names and test cases. The information is currently utilized to generate information in test reports.

Known failure list files conventionally use the extension `.kfl` and are kept either as a user's personal file or a shared file, but not generally distributed as part of a test suite (unlike an exclude list).

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