It appears
that an edge can have one source and one target. If true,
that means that I can't use it.
That's the normal definition of an edge.
What appears to be ambiguous is, I suspect, merely the fact
that in the model I am representing a node can have more than
one predecessor node and more than one successor node.
That's normal too. If a node has three predecessors then it has three
"inbound" edges, one from each predecessor.
Michael Kay
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list