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History attribute

The netCDF manual recommends that each time a file is modified,
an informative line should be added to the global attribute
"history". Fine, that would be useful. But if I understood
chapter 9 of the manual correctly, each such addition to an attribute
will cause the whole file to be copied, which is rather undesirable.
Is there any way to prevent this? Perhaps one could somehow reserve
sufficient space for extension of the history attribute when creating
the file.
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Konrad Hinsen                          | E-Mail: hinsen@xxxxxxxxxx
Laboratoire de Dynamique Moleculaire   | Tel.: +33-4.76.88.99.28
Institut de Biologie Structurale       | Fax:  +33-4.76.88.54.94
41, av. des Martyrs                    | Deutsch/Esperanto/English/
38027 Grenoble Cedex 1, France         | Nederlands/Francais
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