diff --git a/LuaLibs/AddManData.lua b/LuaLibs/AddManData.lua
index 629201b..bdfa5c7 100644
--- a/LuaLibs/AddManData.lua
+++ b/LuaLibs/AddManData.lua
@@ -179,7 +179,10 @@ PRINT_ELEMENT = {
    EXTRA_SHELL = 2,
    INFILL = 3,
    AUX_SOLID = 4,
-   RIB = 5,
+   RIB_UNBOUNDED = 5,
+   RIB_EXTERNAL = 6,
+   RIB_INTERNAL = 7,
+   RIB_SUPPORT = 8,
 }
 
 PRINT_ORDER = {