stateDiagram-v2
    direction LR
    [*] --> Active

    state Active {
      direction BT
        [*] --> Inner
        Inner --> NumLockOn : EvNumLockPressed
    }
    %% Outer --> Inner
      

      stateDiagram
        direction LR
        [*] --> A
        A --> B
        B --> C
        state B {
          direction LR
          a --> b
        }
        B --> D