...

• angle: angle or direction of rotation

• crop: activate crop mode

• x: x (easting) coordinate of the center of the crop box

• y: y (northing) coordinate of the center of the crop box

• background (or color): fill colocolor

simplified syntax parameters

...

Angle of rotation (or direction).

Example 1 - Turn left

{
    "rotate":"left"
}

...

Simplified syntax: a_left,c_rotate

Example 2 - Turn 45 degrees

{
    "rotate":45
}

...