Working with exception-handling clauses requires a thorough understanding of metadata and Microsoft intermediate language (MSIL) instruction formats. Information can be found in the Common Language Infrastructure (CLI) documentation, especially "Partition II: Metadata Definition and Semantics" and "Partition III: CIL Instruction Set". The documentation is available online; see tp://go.microsoft.com/fwlink/?LinkID=99212 on MSDN and tp://go.microsoft.com/fwlink/?LinkID=65552 on the Ecma International Web site.