diff --git a/front-end/caching.md b/front-end/caching.md
index 6586205e..cea2dbd9 100644
--- a/front-end/caching.md
+++ b/front-end/caching.md
@@ -1,6 +1,8 @@
 Caching
 ==
 
+WIP.
+
 ## Glossary
 
 - **Cookies**
diff --git a/front-end/html.md b/front-end/html.md
index 2f3f74eb..5b1407ae 100644
--- a/front-end/html.md
+++ b/front-end/html.md
@@ -1,6 +1,8 @@
 HTML
 ==
 
+WIP.
+
 ## Glossary
 
 - **Doctype**
diff --git a/front-end/javascript.md b/front-end/javascript.md
index 18093657..e5d1a5e5 100644
--- a/front-end/javascript.md
+++ b/front-end/javascript.md
@@ -1,6 +1,8 @@
 JavaScript
 ==
 
+WIP.
+
 ## Contents
 
 - [Glossary](#glossary)
@@ -97,3 +99,4 @@ JavaScript
 ## Useful Links
 
 - https://medium.com/javascript-scene/10-interview-questions-every-javascript-developer-should-know-6fa6bdf5ad95#.l2n8icwl4
+- https://github.com/mbeaudru/modern-js-cheatsheet
diff --git a/front-end/networking.md b/front-end/networking.md
index c203e6a4..f013f4f4 100644
--- a/front-end/networking.md
+++ b/front-end/networking.md
@@ -1,6 +1,8 @@
 Networking
 ==
 
+WIP.
+
 ## Glossary
 
 - **JSON**
diff --git a/front-end/performance.md b/front-end/performance.md
index 76dfad26..5e5fe530 100644
--- a/front-end/performance.md
+++ b/front-end/performance.md
@@ -1,6 +1,8 @@
 Performance
 ==
 
+WIP.
+
 ## Glossary
 
 - **Critical Rendering Path** -