Clue ins
This is really grey and seems to get muddled with Priming (psychological) often. They essentially have to trigger you in some way in order to prime or clue you in to whatever Operations type stuff they are doing. Could be talking about it in Code Dictionary referring to things in a sideways way, acting stuff out with props. It really depends a lot on the script and the goal of their psyop.
Coughing is common. Door slamming, sneezing, throwing things away. Just general repeating noises.
This could look different for you but my Neural linguistic programming has included driving home certain numbers of signals denoting things.
1- Yes, affirmative, confirmation, Positive signal
2- No, opposite of 1, discouraging behavior preceding the signal, Neg
3- this one is less well defined but seems to hint at change or a delta, thinking outside the box, or when my behavior was not as well anticipated, perhaps?
4- stronger neg, too far or too much, perhaps that the behavior will lead to retaliation (though what doesn’t at this point?)
Multiple signals that aren’t counted just seems to indicate alarm or trying to introduce stress
There are other signals too, for instance if you are about to eat a food item Dosed by perpetrators, someone will typically make a noise. This also happens though if they are merely threatening a dose (or perhaps it could have just been too small or not noticeable). It has happened before where thee food did not actually seem dosed, but they had access to it and may have simply threatening to remove peace of mind.