diff --git a/README.md b/README.md
index b3d2673..007ef1a 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,11 @@
       - [Latching Relay Display](#latching-relay-display)
       - [Latching Solenoid Display](#latching-solenoid-display)
   * [Actuator Box](#actuator-box-2)
+    + [Logic Diagram](#logic-diagram-3)
+    + [Custom Relay Control Classes](#custom-relay-control-classes)
+      - [Non-Latching Relay Class](#non-latching-relay-class)
+      - [Latching Relay Class](#latching-relay-class)
+      - [Latching Solenoid Class](#latching-solenoid-class)
 - [System Upgrades After Initial Design](#system-upgrades-after-initial-design)
   * [Servo Motor Main Valve for Throttling](#servo-motor-main-valve-for-throttling)
   * [MODBUS TCP Communication for Integration in Ignition SCADA](#modbus-tcp-communication-for-integration-in-ignition-scada)