[1] XProc: An XML Pipeline Language (2010-05-11 22:38:07 +09:00 版) <http://www.w3.org/TR/2010/REC-xproc-20100511/#xproc-media-type>
[2] XProc 2.0: An XML Pipeline Language (2016-07-21 14:35:49 +09:00) <https://www.w3.org/TR/2016/NOTE-xproc20-20160721/#xproc-media-type>