diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index e6e7573..07ba48e 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -73,5 +73,5 @@
 
 - [Syndicated Actor Model](./syndicated-actor-model.md)
 - [Protocol specification](./protocol.md)
-- [The System Layer](./system-layer.md)
-- [Synit as a System Layer](./synit-as-system-layer.md)
+- [Breaking Down the System Layer](./system-layer.md)
+- [Building Up a System Layer](./synit-as-system-layer.md)
diff --git a/src/synit-as-system-layer.md b/src/synit-as-system-layer.md
index e6f37ba..6bb3722 100644
--- a/src/synit-as-system-layer.md
+++ b/src/synit-as-system-layer.md
@@ -1,4 +1,8 @@
-# Synit as a System Layer
+# Building Up a System Layer
+**or, Synit as a System Layer**
+
+*Tony Garnock-Jones  
+October 2022*
 
 I will then design dataspace-based interaction protocols that realize
 this functionality. These protocols will form the heart of the system:
diff --git a/src/system-layer.md b/src/system-layer.md
index 5f6c7ea..f2292d2 100644
--- a/src/system-layer.md
+++ b/src/system-layer.md
@@ -1,4 +1,4 @@
-# The System Layer
+# Breaking Down the System Layer
 
 *Tony Garnock-Jones  
 October 2022*