diff --git a/AlgebraicDataflowArchitectureModel/src/graphicalrefactor/actions/DAGLayoutAction.java b/AlgebraicDataflowArchitectureModel/src/graphicalrefactor/actions/DAGLayoutAction.java
index 5f67325..db8bb5d 100644
--- a/AlgebraicDataflowArchitectureModel/src/graphicalrefactor/actions/DAGLayoutAction.java
+++ b/AlgebraicDataflowArchitectureModel/src/graphicalrefactor/actions/DAGLayoutAction.java
@@ -7,7 +7,6 @@
 
 	public DAGLayoutAction(Editor editor) {
 		super("DAG Layout", editor);
-		// TODO Auto-generated constructor stub
 	}
 	
 	@Override
diff --git a/AlgebraicDataflowArchitectureModel/src/graphicalrefactor/layouts/DAGLayout.java b/AlgebraicDataflowArchitectureModel/src/graphicalrefactor/layouts/DAGLayout.java
index 252d0f9..c09178c 100644
--- a/AlgebraicDataflowArchitectureModel/src/graphicalrefactor/layouts/DAGLayout.java
+++ b/AlgebraicDataflowArchitectureModel/src/graphicalrefactor/layouts/DAGLayout.java
@@ -40,7 +40,7 @@
 					mxGraphView view = graph.getView();
 					mxCellState state = view.getState(cell);
 					
-					if(!"ellipse".equals(state.getStyle().get("shape")) && (cell.getEdgeCount() == 1)) {
+					if (!"ellipse".equals(state.getStyle().get("shape")) && (cell.getEdgeCount() == 1)) {
 						List<mxCell> newline = new ArrayList<mxCell>();
 						map.add(newline);
 						lines(map, cell);
@@ -48,20 +48,20 @@
 				}
 			}
 			
-			//���בւ�
+			// ���בւ�
 			sort(map, 0, false);
 			
-			//layout
+			// layout
 			int count;
 			int skip = 0;
 			mxGraphView view = graph.getView();
-			for(int i = 0; i < map.size(); i++) {
+			for (int i = 0; i < map.size(); i++) {
 				count = 0;
-				for(int j = 0; j < map.get(i).size(); j++) {
+				for (int j = 0; j < map.get(i).size(); j++) {
 					mxGeometry geom = (mxGeometry) map.get(i).get(j).getGeometry().clone();
 					mxCellState state = view.getState(map.get(i).get(j));
-					if(checkmoved(moved, map.get(i).get(j))) {
-						if("ellipse".equals(state.getStyle().get("shape"))){
+					if (checkmoved(moved, map.get(i).get(j))) {
+						if ("ellipse".equals(state.getStyle().get("shape"))){
 							geom.setX(50 + j*200);
 						} else {
 							geom.setX(100 + j*200);
@@ -69,8 +69,8 @@
 						geom.setY(100 + (i-skip)*100);
 						model.setGeometry(map.get(i).get(j), geom);
 						moved.add(map.get(i).get(j).getId());
-					} else if(geom.getX() < 100 + j*150) {
-						if("ellipse".equals(state.getStyle().get("shape"))){
+					} else if (geom.getX() < 100 + j*150) {
+						if ("ellipse".equals(state.getStyle().get("shape"))){
 							geom.setX(50 + j*200);
 						} else {
 							geom.setX(100 + j*200);
@@ -81,11 +81,10 @@
 						count++;
 					}
 				}
-				if(count >= map.get(i).size())skip++;
+				if (count >= map.get(i).size())skip++;
 			}
 			
-		}
-		finally {
+		} finally {
 			model.endUpdate();
 		}
 	}
@@ -95,13 +94,13 @@
 		mapping.get(mapping.size()-1).add(next);
 		int tagcount = 0;
 		mxCell edge;
-		for(int i = 0; i < next.getEdgeCount(); i++) {
+		for (int i = 0; i < next.getEdgeCount(); i++) {
 			edge = (mxCell) next.getEdgeAt(i);
-			if(next != (mxCell) edge.getTarget() && ((mxCell) edge.getTarget() != null)) {
+			if (next != (mxCell) edge.getTarget() && ((mxCell) edge.getTarget() != null)) {
 				tagcount++;
-				if(tagcount > 1) {
+				if (tagcount > 1) {
 					List<mxCell> newline = new ArrayList<mxCell>(mapping.get(mapping.size()-1));
-					while(newline.get(newline.size()-1).getId() != next.getId()) {
+					while (newline.get(newline.size()-1).getId() != next.getId()) {
 						newline.remove(newline.size()-1);
 					}
 					mapping.add(newline);
@@ -115,8 +114,8 @@
 	}
 	
 	public boolean checkmoved(List<String> list, mxCell cell) {
-		for(int i = 0; i < list.size(); i++) {
-			if(list.get(i).equals(cell.getId()))return false;
+		for (int i = 0; i < list.size(); i++) {
+			if (list.get(i).equals(cell.getId()))return false;
 		}
 		return true;
 	}
@@ -124,20 +123,20 @@
 	public void sort(List<List<mxCell>> map, int n, boolean check) {
 		int msize = -1;
 		int mnum = -1;
-		if(check) {
-			for(int i = n; i < map.size(); i++) {
-				if(map.get(i).size() > msize && (map.get(n-1).get(0).getId().equals(map.get(i).get(0).getId()))) {
+		if (check) {
+			for (int i = n; i < map.size(); i++) {
+				if (map.get(i).size() > msize && (map.get(n-1).get(0).getId().equals(map.get(i).get(0).getId()))) {
 					mnum = i;
 				}
 			}
 		} else {
-			for(int i = n; i < map.size(); i++) {
-				if(map.get(i).size() > msize) {
+			for (int i = n; i < map.size(); i++) {
+				if (map.get(i).size() > msize) {
 					mnum = i;
 				}
 			}
 		}
-		if(mnum >= 0) {
+		if (mnum >= 0) {
 			Collections.swap(map, n, mnum);
 			sort(map, n+1, true);
 		} else if(n < map.size()) {