Index: /trunk/Mars/MLinkDef.h
===================================================================
--- /trunk/Mars/MLinkDef.h	(revision 17786)
+++ /trunk/Mars/MLinkDef.h	(revision 17787)
@@ -9,4 +9,9 @@
 // I/O
 #pragma link C++ namespace Huffman+;
+#pragma link C++ class Checksum+;
+#pragma link C++ namespace FITS+;
+#pragma link C++ struct FITS::Compression+;
+#pragma link C++ enum FITS::CompressionProcess_t+;
+#pragma link C++ enum FITS::RowOrdering_t+;
 #pragma link C++ class izstream+;
 #pragma link C++ class fits+;