diff --git a/Overview.md b/Overview.md
index b484e3a..e8bab2c 100644
--- a/Overview.md
+++ b/Overview.md
@@ -25,6 +25,8 @@ function onInputPressed(what)
     When in keyboard MODE_NORMAL, input events are reported here when the
     key or button is first depressed.  For a full list of keys/buttons/controllers,
     see Singe/Framework.singe.
+
+    For MODE_FULL, this event will be called with the keysym of the key pressed.
   --]]
 end
 
@@ -33,13 +35,25 @@ function onInputReleased(what)
     When in keyboard MODE_NORMAL, input events are reported here when the
     key or button is released.  For a full list of keys/buttons/controllers,
     see Singe/Framework.singe.
+
+    For MODE_FULL, this event will be called with the keysym of the key released.
   --]]
 end
 
 function onKeyPressed(key, scancode)
+  --[[
+    When in keyboard MODE_FULL, input events are reported here when the key is
+    pressed.  Both the keysym and scancode are returned.  For a list of available
+    scancodes, see Singe/Framework.singe.
+  --]]
 end
 
 function onKeyReleased(key, scancode)
+  --[[
+    When in keyboard MODE_FULL, input events are reported here when the key is
+    released.  Both the keysym and scancode are returned.  For a list of available
+    scancodes, see Singe/Framework.singe.
+  --]]
 end
 
 function onMouseMoved(x, y, xr, yr, which)