FixedSlotConstraints: {
    allowedColors?: string[];
    allowedFonts?: string[];
    lockRotation?: boolean;
    lockX?: boolean;
    lockY?: boolean;
    maxChars?: number;
    maxHeight?: number;
    maxLines?: number;
    maxWidth?: number;
    minChars?: number;
    minHeight?: number;
    minWidth?: number;
}