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10. Attributes from and to

Description

The attributes from and to refer to "marks", which are set by attribute label.



Legal value of the from and to attributes
The value of from and to attribute must be an NCName. (An XML Name, minus the ":"; details see http://www.w3.org/TR/REC-xml-names/#NT-NCName ).

...
<relation
   xmlns:xlink="http://www.w3.org/1999/xlink"
   xlink:type="arc"
   xlink:from="zeus"
   xlink:to="heracles">
</relation>
...