PROBLEM TO BE SOLVED: To be capable of controlling whether or not contents of actual exchanges of messages are disclosed according to provision source when providing a minute book generated based on the messages exchanged by using a chat facility.;SOLUTION: Editing information is generated obtained by editing a plurality of messages by referring to a storage unit storing a plurality of messages exchanged using a chat facility and a plurality of transmission source information which is information capable of specifying transmission source user accounts specified for each of the plurality of message. Then, as well as providing editing information for a user account included in the plurality of transmission sources, an interface is provided allowing referencing of the plurality of messages before editing. Furthermore, editing information is provided for the user account which is other than the plurality of transmission sources and the interface is not provided.;COPYRIGHT: (C)2016,JPO&INPIT
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