2 files changed, 6 insertions, 2 deletions
diff --git a/chapter03/src/main/java/com/seaofnodes/simple/node/AddNode.java b/chapter03/src/main/java/com/seaofnodes/simple/node/AddNode.java
index 2d58cb75..7c1968c5 100644
--- a/chapter03/src/main/java/com/seaofnodes/simple/node/AddNode.java
+++ b/chapter03/src/main/java/com/seaofnodes/simple/node/AddNode.java
@@ -29,7 +29,7 @@ public class AddNode extends Node {
 
     @Override
     public Node idealize () {
-        // TODO: add of 0
+        // TODO: add of 0, and many other peepholes added in Chaper04
         return null;
     }
 
diff --git a/chapter03/src/main/java/com/seaofnodes/simple/node/Node.java b/chapter03/src/main/java/com/seaofnodes/simple/node/Node.java
index 504b8e24..82357f9b 100644
--- a/chapter03/src/main/java/com/seaofnodes/simple/node/Node.java
+++ b/chapter03/src/main/java/com/seaofnodes/simple/node/Node.java
@@ -82,7 +82,11 @@ public abstract class Node {
     // has to be robust with broken graph/nodes.
     @Override
     public final String toString() {
-        // TODO: This needs a lot of work
+        // TODO: The print evolves in later chapters.  For now, a simple
+        // recursive print does well.  Later with control flow and later still
+        // with loops, we need some serious algorithm work to get a decent
+        // print.  So you should consider the "print" to always be a work-in-
+        // progress as we march through the chapters.
         return print();
     }