ExportCharset:
| "utf-8"
| "iso-8859-6"
| "windows-1256"
| "iso-8859-4"
| "windows-1257"
| "iso-8859-14"
| "iso-8859-2"
| "windows-1250"
| "gbk"
| "gb18030"
| "big5"
| "koi8-r"
| "koi8-u"
| "iso-8859-5"
| "windows-1251"
| "x-mac-cyrillic"
| "iso-8859-7"
| "windows-1253"
| "iso-8859-8"
| "windows-1255"
| "euc-jp"
| "iso-2022-jp"
| "shift-jis"
| "euc-kr"
| "macintosh"
| "iso-8859-10"
| "iso-8859-16"
| "windows-874"
| "windows-1254"
| "windows-1258"
| "iso-8859-1"
| "windows-1252"
| "iso-8859-3"