* *audio-in* is a simple input connected to an omnidirectional microphone.
* *audio-out* is a simple output connected to a pair of headphones.
* *keywords* is a non-blocking XBus input connected to a natural language processing device that detects spoken words in an audio stream.
* *override* is a simple input connected to a button.

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* The signal from *audio-in* should be copied to *audio-out* until a keyword from the SPOILER-RELATED KEYWORDS list for acclaimed television series GET THE THRONE is detected, after which *audio-out* should be locked to a value of 50 until the *override* button is pushed.
* Look in the “Supplemental Data” section of the manual to find David and Xiaomei’s SPOILER-RELATED KEYWORDS for various television shows.