--- a/src/llrb/llrb.c	Tue May 19 05:07:22 2015 +0900
+++ b/src/llrb/llrb.c	Tue May 19 06:08:38 2015 +0900
@@ -59,61 +59,57 @@
     context->data[Next]->next = context->data[Allocate]->allocate.next;
     
     if (tree->root == 0) {
-        struct Node* node = &context->data[Node]->node;
-        node->color = Black;
-        node->left = 0;
-        node->right = 0;
-        context->data[Allocate]->allocate.next = InitNode;
+        context->data[Allocate]->allocate.next = Insert;
         goto meta(context, Allocator);
     }
 
-    context->data[Allocate]->allocate.next = Insert;
+    context->data[Allocate]->allocate.next = Create;
     tree->current = tree->root;
 
     goto meta(context, Compare);
 }
 
-__code clone(struct Context* context) {
-    struct Node* node = &context->data[context->dataNum]->node;
+__code replaceNode(struct Context* context) {
+    struct Node* newNode = &context->data[context->dataNum]->node;
     struct Tree* tree = &context->data[Tree]->tree;
     struct Node* persistentNode = tree->current;
 
     int result = context->data[Tree]->tree.result;
 
-    *node = *persistentNode;
+    *newNode = *persistentNode;
 
     if (result == 0) {
         stack_pop(pstack, &tree->current);
         goto meta(context, RotateL);
     } else if (result == 1) {
         tree->current = persistentNode->right;
-        node->right = context->heap;
+        newNode->right = context->heap;
     } else {
         tree->current = persistentNode->left;
-        node->left = context->heap;
+        newNode->left = context->heap;
     }
 
     if (tree->current == 0) {
         stack_pop(pstack, &tree->current);
-        context->data[Allocate]->allocate.next = InitNode;
+        context->data[Allocate]->allocate.next = Insert;
         goto meta(context, Allocator);
     }
     
-    context->data[Allocate]->allocate.next = Insert;
+    context->data[Allocate]->allocate.next = Create;
     goto meta(context, Compare);
 }
 
-__code initNode(struct Context* context) {
-    struct Node* node = &context->data[context->dataNum]->node;
+__code insertNode(struct Context* context) {
+    struct Node* newNode = &context->data[context->dataNum]->node;
     struct Node* temporalNode = &context->data[Node]->node;
     struct Tree* tree = &context->data[Tree]->tree;
 
     temporalNode->color = Red;
-    *node = *temporalNode;
+    *newNode = *temporalNode;
 
     if (tree->root == 0) {
-        node->color = Black;
-        tree->root = node;
+        newNode->color = Black;
+        tree->root = newNode;
         goto meta(context, context->data[Next]->next);
     }
 
@@ -137,10 +133,10 @@
     goto meta(context, context->data[Allocate]->allocate.next);
 }
         
-__code insert(struct Context* context) {
+__code createNode(struct Context* context) {
     stack_push(pstack, &context->heap);
 
-    context->data[Allocate]->allocate.next = Clone;
+    context->data[Allocate]->allocate.next = Replace;
     goto meta(context, Allocator);
 }