[1] [MS-WMF]: Windows Metafile Format ( (4/12/2014, 5:59:09 AM 版)) <http://msdn.microsoft.com/en-us/library/cc250370.aspx>

[2] RFC 7903 - Windows Image Media Types (10/2/2016, 1:24:12 PM) <https://tools.ietf.org/html/rfc7903>