Point de Capiton or “quilting point” “anchoring point” is the interaction of the signifier and the signified which they are knotted together, fixed and stablized. In the daily symbolic world of discourse, the continuous unstable sliding of the signifier is separated from that of the signified. If not with the point de caption, there would not be a fixed position to situate the dissemination of meanings. On those quilting points, the meaning is distributed, disseminated and stablized just like an upholstery button stitching on the material.
“It’s the point of convergence that enables everything that happens in this discourse to be situated retroactively and prospectively.” (Lacan, Seminar III, 267-8)