diff --git a/Frolic.md b/Frolic.md
index bf578f7..511130e 100644
--- a/Frolic.md
+++ b/Frolic.md
@@ -60,6 +60,10 @@ This is the same as multiplying the effective speed by 32.
 
 ![SPEED button context menu](images/chaos_speed_menu.png)
 
+When Turbo Mode is enabled, the letter T appears on top of the SPEED knob:
+
+![SPEED button turbo mode indicator](images/chaos_turbo_mode.png)
+
 **CHAOS**: This knob controls the value of the $A$ parameter in the first equation.
 The value of $A$ ranges from 3.8 to 6.7, which was experimentally determined
 to give a wide range of orbital behavior: from highly ordered to highly chaotic.
diff --git a/Glee.md b/Glee.md
index 8f2f4ff..175a731 100644
--- a/Glee.md
+++ b/Glee.md
@@ -60,6 +60,11 @@ This is the same as multiplying the effective speed by 32.
 
 ![SPEED button context menu](images/chaos_speed_menu.png)
 
+When Turbo Mode is enabled, the letter T appears on top of the SPEED knob:
+
+![SPEED button turbo mode indicator](images/chaos_turbo_mode.png)
+
+
 **CHAOS**: This knob controls the value of a constant in the Aizawa attractor in a way that varies the nature of its chaotic orbit.
 
 Glee supports 4 distinct *chaos modes* that are named after kinds of fruit.
diff --git a/Lark.md b/Lark.md
index 30933cb..1ddefb1 100644
--- a/Lark.md
+++ b/Lark.md
@@ -65,6 +65,10 @@ This is the same as multiplying the effective speed by 32.
 
 ![SPEED button context menu](images/chaos_speed_menu.png)
 
+When Turbo Mode is enabled, the letter T appears on top of the SPEED knob:
+
+![SPEED button turbo mode indicator](images/chaos_turbo_mode.png)
+
 **CHAOS**: This knob controls the value of a constant in the Dequan Li attractor in a way that varies the nature of its chaotic orbit.
 
 Lark supports 4 distinct *chaos modes* that are named after types of animals.
diff --git a/images/chaos_turbo_mode.png b/images/chaos_turbo_mode.png
new file mode 100644
index 0000000..57b2775
Binary files /dev/null and b/images/chaos_turbo_mode.png differ