--- loncom/interface/filetypes.tab	2001/11/29 20:04:15	1.10
+++ loncom/interface/filetypes.tab	2001/11/30 14:29:26	1.11
@@ -31,3 +31,4 @@ jar		ign	Java Jar File
 save		hdn	Hidden Save File
 meta		hdn	Hidden Meta File
 log		hdn	Hidden Log File
+bak             hdn     Hidden Backup File