The value "class" is more or less synonymous with the value "series". The
word "class" is part of the English (UK) archival tradition. So you can
choose between class and series, but don't use them together in the same
EAD instance. I recommend the value "series".
The same problem occurs with the values "fonds" and "recordgrp". The
word "recordgroup" is typical American (US). You can make also a choise,
but it seems better to me to use only one of the values within your own
institute. For Europe I recommend the use of the value "fonds".
In the National Archives of the Netherlands we have depricated the
values "class" and "recordgrp".
Henny van Schie
Nationaal Archief -- www.nationaalarchief.nl
P.O.Box 90520, 2509 LM Den Haag, NL
tel.: ++31-70-3315548 - fax: ++31-70-3315499