Thick/thin switch

One of my early versions of Flamingo had this nifty little piece of code that allowed a single/first surface material to render as if it as a thin sheet rather than a 4" thick block of Plexiglass. It was a great time saver. Anything like that hidden in nXt?

Hi
Yes, it’s in object properties.
When “Thin” is off, it’s “Thick”