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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Kolban
I believe that Espruino has a concept called "hidden variables" and these are variables that are rooted from a JavaScript object called "\0xFF" ... i.e. an object name composed of a single character that is unprintable and has the ordinal value of 255 decimal.