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The nicest way I've ever seen of pointing out hand gestures and body language in a narrative without disrupting it was to not specify what the hand gestures/body language are/is but simply to note ...
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Source: https://writers.stackexchange.com/a/39196 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
The nicest way I've ever seen of pointing out hand gestures and body language in a narrative without disrupting it was to not specify what the hand gestures/body language are/is but simply to note that it exists. "X signaled the group and they [whatever]" as an example, or may favourite one when pointing out expressive hand gestures "if you tied X's hands they'd be struck dumb", "the way X stood clearly said [a thing]". These are efficient and within the context of the narrative quite subtle nods to that fact that humans communicate at least as much without speaking as we do by making noises.