> For the complete documentation index, see [llms.txt](https://docs.mixeffect.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mixeffect.app/automate/osc/messages/upstream-keyers/pattern-style.md).

# Pattern Style

| Message                        | Description                                            | Arguments |
| ------------------------------ | ------------------------------------------------------ | --------- |
| `/mixeffect/usk/pattern/style` | Sets the Pattern Style for the Pattern upstream keyer. | Multiple  |

| Argument | Type    | Description                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| -------- | ------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Pattern  | Integer | <p>0 = Left To Right Bar<br>1 = Top To BottomBar<br>2 = Horizontal Barn Door<br>3 = Vertical Barn Door<br>4 = Corners In Four Box<br>5 = Rectangle Iris<br>6 = Diamond Iris<br>7 = Circle Iris<br>8 = Top Left Box<br>9 = Top Right Box<br>10 = Bottom Right Box<br>11 = Bottom Left Box<br>12 = Top Center Box<br>13 = Right Center Box<br>14 = Bottom Center Box<br>15 = Left Center Box<br>16 = Top Left Diagonal<br>17 = Top Right Diagonal</p> |
| USK      | Integer | One-based index of the Upstream Keyer. Default is 1.                                                                                                                                                                                                                                                                                                                                                                                                |
| M/E      | Integer | One-based index of the Mix Effect Bus. Default is 1.                                                                                                                                                                                                                                                                                                                                                                                                |