MSVC not so much into details about the previously mentioned standard.

libwccl/values/position.cpp

@@ -6,9 +6,15 @@ namespace Wccl {
 
 const char* Position::type_name = "Position";
 
+#ifndef _MSC_VER
+//If you're strict about standards, if you want to use
+//integral or enum static consts in a program, you still
+//have to define them even if the declaration has an initializer.
+//Well, at least GCC is strict about it.
 const int Position::Nowhere;
 const int Position::End;
 const int Position::Begin;
+#endif
 
 std::string Position::to_raw_string() const
 {