Resolution
Power-of-two sizes. Default 512×512.
Frame
Fade Start (outer edge)
Fade End (inner edge)
Defaults to fully transparent — a clean fade to nothing.
Export
9-slice export is a 84×84px image — just enough to cover the mitered corners plus a few tileable pixels per edge.
In Unity: set Texture Type to Sprite, Mesh Type Full Rect, open Sprite Editor and set L/R/T/B border = 40px to match. Draw Mode: Sliced.
In Unity: set Texture Type to Sprite, Mesh Type Full Rect, open Sprite Editor and set L/R/T/B border = 40px to match. Draw Mode: Sliced.