diff --git a/doc/00_index.md b/doc/00_index.md
index 8a9352d8..0d5f9ea9 100644
--- a/doc/00_index.md
+++ b/doc/00_index.md
@@ -3,3 +3,4 @@
 * [Using libui](using-libui.md)
 * [Initialization and the Main Loop](init-main.md)
 * [Event Handling](events.md)
+* [Controls](controls.md)
diff --git a/doc/controls.md b/doc/controls.md
new file mode 100644
index 00000000..2ef5734b
--- /dev/null
+++ b/doc/controls.md
@@ -0,0 +1,17 @@
+<!-- 29 may 2019 -->
+
+# Controls
+
+## Overview
+
+TODO
+
+## Reference
+
+### `xxx`
+
+```c
+TODO
+```
+
+TODO