[1] PI Parameters - XSLT | MDN ( (2013-10-01 16:20:54 +09:00 版)) <https://developer.mozilla.org/en-US/docs/XSLT/PI_Parameters>

[2] Bug 32950 – support "xslt-param" processing instruction for XSLT parameters ( (2013-10-11 15:02:11 +09:00 版)) <https://bugs.webkit.org/show_bug.cgi?id=32950>