Dear ODD aficionados,

Text & Markup:
For one project we mark up names of <persName xml:id="p1">person</persName>s
and places and time. Below the text proper we create link groups that record
where a person was at a certain time in a certain place.
        <link targets="#person #p1"/>
        <link targets="#place #Z10001980"/>
        <link targets="#time #d383873384226"/>

    In DTD times the ID-IDREF(S) mechanism allowed us to verify if there was
indeed a ID for each IDREF. Now the datatype of TARGETS is set to
data.pointer which in turn is "anyURI" (that is also why all targets start
with a "#" I guess).  How can I verify the URI is there? Is this possible at
    What do I have to write in my ODD to get a schema that checks if the
URIs referenced in TARGETS do indeed appear in the text above?

    Thanks for helping


Dr. Marcus Bingenheimer 馬德偉
Director, Library and Information Center 圖書資訊館館長
Dharma Drum Buddhist College 法鼓佛教研修學院 (DDBC)
No. 2-6 Xishihu, Jinshan 20842, Taipei County, Taiwan, R.O.C.
台灣,20842台北縣金山鄉西勢湖2-6號 Tel: +886-2-2498-7171 # 2381