diff --git a/docs/0-Introduction.adoc b/docs/0-RefGuide.adoc
similarity index 100%
rename from docs/0-Introduction.adoc
rename to docs/0-RefGuide.adoc
diff --git a/docs/1-Iteration_Patterns.adoc b/docs/1-Iteration_Patterns.adoc
index de9e8dbcf4..52f7473e50 100644
--- a/docs/1-Iteration_Patterns.adoc
+++ b/docs/1-Iteration_Patterns.adoc
@@ -2180,6 +2180,6 @@ Throws *IllegalArgumentException* if the *MapIterable* contains duplicate values
 
 [cols="3,^1,>3",]
 |===
-|xref:0-Introduction.adoc[previous: Introduction]  | |xref:2-Collection_Containers.adoc[next: Collections and containers]
+|xref:0-RefGuide.adoc[previous: Introduction]  | |xref:2-Collection_Containers.adoc[next: Collections and containers]
 |===
 
diff --git a/docs/2-Collection_Containers.adoc b/docs/2-Collection_Containers.adoc
index 9f85a4be4f..8d22c63241 100644
--- a/docs/2-Collection_Containers.adoc
+++ b/docs/2-Collection_Containers.adoc
@@ -1426,5 +1426,5 @@ There are similar methods for each primitive type, e.g., *MutableFloatCollection
 
 [cols="3,^1,>3",]
 |===
-|xref:1-Iteration_Patterns.adoc[previous: Iteration Patterns]|xref:0-Introduction.adoc[top] |xref:3-Code_Blocks.adoc[next: Code Blocks]
+|xref:1-Iteration_Patterns.adoc[previous: Iteration Patterns]|xref:0-RefGuide.adoc[top] |xref:3-Code_Blocks.adoc[next: Code Blocks]
 |===
diff --git a/docs/3-Code_Blocks.adoc b/docs/3-Code_Blocks.adoc
index 879dbb3076..8dbb0a06df 100644
--- a/docs/3-Code_Blocks.adoc
+++ b/docs/3-Code_Blocks.adoc
@@ -249,5 +249,5 @@ A *{Procedure}* is a code block that performs an evaluation on its single argume
 
 [cols="3,^1,>3",]
 |===
-|xref:2-Collection_Containers.adoc[previous: Collections and containers]  |xref:0-Introduction.adoc[top] |xref:4-Testing_Utilities.adoc[next: Testing Utilities]
+|xref:2-Collection_Containers.adoc[previous: Collections and containers]  |xref:0-RefGuide.adoc[top] |xref:4-Testing_Utilities.adoc[next: Testing Utilities]
 |===
diff --git a/docs/4-Testing_Utilities.adoc b/docs/4-Testing_Utilities.adoc
index 187d8a45b6..e09bb5a9ba 100644
--- a/docs/4-Testing_Utilities.adoc
+++ b/docs/4-Testing_Utilities.adoc
@@ -41,5 +41,5 @@ Verify.assertContains(1, Lists.mutable.with(1));
 
 [cols="3,^1,>3",]
 |===
-|xref:3-Code_Blocks.adoc[previous: Code Blocks]  |xref:0-Introduction.adoc[top] |xref:2-Collection_Containers.adoc[next: 5-Quick_Reference.adoc]
+|xref:3-Code_Blocks.adoc[previous: Code Blocks]  |xref:0-RefGuide.adoc[top] |xref:2-Collection_Containers.adoc[next: 5-Quick_Reference.adoc]
 |===
diff --git a/docs/EclipseCollectionDiagram.png b/docs/EclipseCollectionDiagram.png
index 0531c1d6df..2d2b9c77cf 100644
Binary files a/docs/EclipseCollectionDiagram.png and b/docs/EclipseCollectionDiagram.png differ