node->start or howto get the position from input data

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Hello

I need to know the exact byte position of text in the input.

For example, if the doc contains <html><head></head><body>foo<.....
I want to know that foo begins at position 26.
Does node->start (and node->end for the end) contain this ?

-- Jean-Marc
____________________________________________________________
Jean-Marc Coursimault         |
Xerox Research Centre Europe  | Tel   +33 (0)4 76 61 51 82
Systems Dev. & Engineering    | Fax   +33 (0)4 76 61 51 99
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38240 Meylan (France)         | coursimault@xrce.xerox.com