--- a/ldtypes.h	Sat Mar 16 17:50:13 2013 +0200
+++ b/ldtypes.h	Mon Mar 18 03:38:51 2013 +0200
@@ -118,6 +118,7 @@
 	vertex vPosition; // Position of the subpart
 	double faMatrix[9]; // Transformation matrix for the subpart
 	str zFileName; // Filename of the subpart
+	OpenFile* pFile; // Pointer to opened file for this subfile. nullptr if unopened.
 };
 
 // =============================================================================