--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/paper/final_main/src/type-mds.h	Thu Feb 15 14:48:08 2018 +0900
@@ -0,0 +1,15 @@
+struct Data { /* data segments as types */
+    struct Tree { /* ... */ } tree;
+    struct Node { /* ... */ } node;
+
+    struct IterElem { /* ... */ } iterElem;
+    struct Iterator { /* ... */ } iterator;
+    struct AkashaInfo { /* ... */} akashaInfo;
+    struct AkashaNode { /* ... */} akashaNode;
+};
+
+
+struct Context { /* meta data segment as subtype */
+    /* ... fields for meta computations ... */
+    struct Data **data; /* data segments */
+};