mimetype.assign += (
	".doc" => "application/msword",
	".docx" => "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
	".dotx" => "application/vnd.openxmlformats-officedocument.wordprocessingml.template",
	".potx" => "application/vnd.openxmlformats-officedocument.presentationml.template",
	".ppsx" => "application/vnd.openxmlformats-officedocument.presentationml.slideshow",
	".ppt" => "application/vnd.ms-powerpoint",
	".pptx" => "application/vnd.openxmlformats-officedocument.presentationml.presentation",
	".rtf" => "application/rtf",
	".sldx" => "application/vnd.openxmlformats-officedocument.presentationml.slide",
	".xls" => "application/vnd.ms-excel",
	".xlsx" => "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
	".xltx" => "application/vnd.openxmlformats-officedocument.spreadsheetml.template",
)