| 摘要 |
The invention concerns the recording of a relationship between users of a network, such as the relationship between a client and a supplier, for invoicing the client and paying the supplier. There is provided a list of acts of each user, which each user may access through the network. According to the accesses of the users to the list, the list is updated. No user is allowed to alter acts previously recorded on the list. Thus, the list at any given time provides an overview of the history of the relationship between the users.
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