#ifndef Val_option
#define Val_option(p,f) ((p != NULL) ? ml_some(f(p)) : Val_unit)
#endif /* Val_option */
-#define Val_mDOMString(s) (copy_string((char*) (s)))
#define mDOMString_val(v) ((mDOMStringRef) String_val(v))
#define mDOMNode_val(v) ((mDOMNodeRef) v)
#define mDOMNodeRef_mDOMNode_option(v) ((v == Val_unit) ? NULL : (mDOMNodeRef)Field((v),0))
#define Val_mDOMNodeRef(p) (mDOMNode_option_mDOMNodeRef(p))
#define mDOMNodeRef_val(v) (mDOMNodeRef_mDOMNode_option(v))
+#define mDOMDocRef_val(r) (*((mDOMDocRef *)Data_custom_val(r)))
#endif /* ml_minidom_h */