diff --git a/display.c b/display.c
index 92c6590..aabfd8c 100644
--- a/display.c
+++ b/display.c
@@ -129,6 +129,7 @@ void renderScene() {
 }
 
 void displayQTTree(QTNode *qn) {
+	//QT_split(qn);
 	QT_enumerate(qn);
 }
 
diff --git a/square.h b/square.h
new file mode 100644
index 0000000..a15d627
--- /dev/null
+++ b/square.h
@@ -0,0 +1,19 @@
+// get_z()
+#include "roam.h"
+
+// QuadTree Node.
+typedef struct QTNode {
+	Vertex* center;
+	Vertex* vertices[4];
+	struct QTNode* children[4];
+	struct QTNode* neighbors[4];
+	// linked list across all nodes, for traversal when we display them.
+	struct QTNode* nextNode;
+	struct QTNode* previousNode;
+	unsigned int minLOD;
+	unsigned int maxLOD;
+} QTNode;
+
+QTNode* QT_example();
+void QT_enumerate(QTNode* first);
+void QT_split(QTNode* parent);