: number The width of the 9-slice's left column.
: number The width of the 9-slice's right column.
: number The height of the 9-slice's top row.
: number The height of the 9-slice's bottom row.
?: "none" | "edges" | "center" | "all" How regions should tile when the sprite is scaled.
- "none": All regions stretch (default)
- "edges": Edge regions (top, bottom, left, right) tile, center stretches
- "center": Center region tiles, edges stretch
- "all": Both edges and center tile
Corners never tile.
}