[13] NCX の %SMILtimeVal; は clipBegin, clipEnd の属性値の型です。

[12] DAISY ANSI/NISO Z39.86-2002 - The DAISY Consortium, 2023-11-26T05:54:52.000Z https://daisy.org/info-help/document-archive/archived-projects/daisy-ansi-niso-z39-86-2002-archived/#NCXDTD

[2] 資源DTDや配布情報DTDの clipBegin, clipEnd の属性値の型でもあります。

• [1] DAISY ANSI/NISO Z39.86-2002 - The DAISY Consortium, 2023-11-26T06:01:56.000Z https://daisy.org/info-help/document-archive/archived-projects/daisy-ansi-niso-z39-86-2002-archived/#RESDTD
• [3] DAISY ANSI/NISO Z39.86-2002 - The DAISY Consortium, 2023-11-26T06:04:42.000Z https://daisy.org/info-help/document-archive/archived-projects/daisy-ansi-niso-z39-86-2002-archived/#Distinfo