Abstract: One terminal device accepts provision information to be provided, and furthermore, recipient information relating to a recipient capable of receiving the provision information, and accepts a provision format of the provision information for each recipient. The accepted provision information, recipient information and provision format are transmitted to a central apparatus. In the case where a request of the provision information and the recipient information is transmitted from one of terminal devices, provision information corresponding to the registered provision format is provided to the one of terminal devices based on the received recipient information.

Abstract: A management apparatus searches whether or not a notification file corresponding to a document name displayed on a display is present within a difference management table, and displays a predetermined indication “*”, which indicates the presence of a notification file, on the display, when a notification file is present. When conventional documents are converted into electronic documents, there arises problems that rather inconveniences would be brought compared to the paper-printed documents before converted into the electronic documents, and these inconveniences may cause mistakes in the work and misjudgments in the maintenance and operation of machinery and equipment and may induce considerable economical loss in the business activities and serious accidents in the maintenance and operation of machinery and equipment. However, these problems are solved by the present invention.

Abstract: A management apparatus searches whether or not a notification file corresponding to a document name displayed on a display is present within a difference management table, and displays a predetermined indication “*”, which indicates the presence of a notification file, on the display, when a notification file is present. When conventional documents are converted into electronic documents, there arises problems that rather inconveniences would be brought compared to the paper-printed documents before converted into the electronic documents, and these inconveniences may cause mistakes in the work and misjudgments in the maintenance and operation of machinery and equipment and may induce considerable economical loss in the business activities and serious accidents in the maintenance and operation of machinery and equipment. However, these problems are solved by the present invention.

Abstract: One terminal device accepts provision information to be provided, and furthermore, recipient information relating to a recipient capable of receiving the provision information, and accepts a provision format of the provision information for each recipient. The accepted provision information, recipient information and provision format are transmitted to a central apparatus. In the case where a request of the provision information and the recipient information is transmitted from one of terminal devices, provision information corresponding to the registered provision format is provided to the one of terminal devices based on the received recipient information.