Manifests as matte-black horizontal bands that appear above and below each simulation's viewable area, their edges slightly degraded with VHS noise artifacting. Contains encrypted data streams that occasionally flicker into visibility during tracking errors, revealing information the system intended to crop. Creates perceptual blind spots that feel completely natural to players until they notice a crucial detail was always just outside the frame. Generates a barely-audible 60Hz hum when actively enforcing frame boundaries, a sound that becomes deafening to those who learn to listen for it.

Acts as the framing authority that literally shapes player reality, proving that in the Chaintrix, the edges of the screen aren't technical limitations but narrative weapons.