--- a/ldtypes.h	Wed Apr 17 14:09:38 2013 +0300
+++ b/ldtypes.h	Fri Apr 19 15:21:46 2013 +0300
@@ -113,7 +113,7 @@
 	LDObject* topLevelParent ();
 	
 	static void moveObjects (std::vector<LDObject*> objs, const bool bUp);
-	static str objectListContents (std::vector<LDObject*>& objs);
+	static str objectListContents (const std::vector<LDObject*>& objs);
 	
 	QTreeWidgetItem* qObjListEntry;
 };