Default (Windows).sublime-keymap

[
  {
    "keys": ["ctrl+alt+9"], "command": "set_layout", "args": {
        "cols": [0.0, 0.33, 0.66, 1.0],
        "rows": [0.0, 0.33, 0.66, 1.0],
        "cells":
        [
            [0, 0, 1, 1], [1, 0, 2, 1], [2, 0, 3, 1],
            [0, 1, 1, 2], [1, 1, 2, 2], [2, 1, 3, 2],
            [0, 2, 1, 3], [1, 2, 2, 3], [2, 2, 3, 3]
        ]
    }
  }
]