(PECL xlswriter >= 1.2.1)
Create a cell format object
Vtiful\Kernel\Format::FORMAT_ALIGN_LEFTVtiful\Kernel\Format::FORMAT_ALIGN_CENTERVtiful\Kernel\Format::FORMAT_ALIGN_RIGHTVtiful\Kernel\Format::FORMAT_ALIGN_FILLVtiful\Kernel\Format::FORMAT_ALIGN_JUSTIFYVtiful\Kernel\Format::FORMAT_ALIGN_CENTER_ACROSSVtiful\Kernel\Format::FORMAT_ALIGN_DISTRIBUTEDVtiful\Kernel\Format::FORMAT_ALIGN_VERTICAL_TOPVtiful\Kernel\Format::FORMAT_ALIGN_VERTICAL_BOTTOMVtiful\Kernel\Format::FORMAT_ALIGN_VERTICAL_CENTERVtiful\Kernel\Format::FORMAT_ALIGN_VERTICAL_JUSTIFYVtiful\Kernel\Format::FORMAT_ALIGN_VERTICAL_DISTRIBUTEDVtiful\Kernel\Format::UNDERLINE_SINGLEVtiful\Kernel\Format::UNDERLINE_DOUBLEVtiful\Kernel\Format::UNDERLINE_SINGLE_ACCOUNTINGVtiful\Kernel\Format::UNDERLINE_DOUBLE_ACCOUNTING