This effect renders the 1st texture on the front and the 2nd on the back.If the the FX SINGLE SIDED property is set to 1, all faces in the model are treated as front faces and the model is rendered twice: once for the front and once for the back. The back is created by mirroring the front.When using this effect in a picture layer using the CLOTH style (1st dropdown), set the 3rd dropdown to SINGLE SIDED and set the FX SINGLE SIDED property to 1.