[Harlowe] Auto-save feature

Using Harlowe version 1.2.2

I want to let my story auto-save on every new passage, thus I'm thinking of having that stuff included in the Header. However, I don't want the auto-save to trigger at all if the player is located in say passage Barricade or passage Tunnel or passage Lift.

Could somebody give me a snippet, showing me how I successfully achieve this? I'd be happy to buy you a vegan dinner if you give me your paypal...