Bdsm - Zfx

Could you clarify what refers to? For example:

Deriving pleasure or psychological satisfaction from the infliction or reception of intense sensations, which may include pain. National Institutes of Health (.gov) Psychological and Biological Insights bdsm zfx

While ZFX represents a specific cinematic style of kink, modern practitioners typically engage with the community through social networking and education platforms. Could you clarify what refers to