6. A meta data customizing method for customizing meta data in a system in which the meta data is delivered from a delivering apparatus having a function to deliver the meta data which is described in a structured language, to a user apparatus, and the meta data is used, comprising: an external server other than the delivering apparatus, collecting the meta data from the delivering apparatus; the user apparatus making a meta data obtaining request to the external server, the request comprising a designation by a relative position from a predetermined element of an element to customize, which element exists in a predetermined location of a description of the structured language of the meta data to be obtained, as well as a format designation designating a variable to be located in the element and a format thereof; and the external server every time dynamically replacing the contents of the corresponding element of the description of the structured language of the meta data to be outputted, with a value corresponding to the variable and the format designated by the format designation, based on the designation of the element and the format designation, according to different requests from respective user apparatuses.
6. A meta data customizing method for customizing meta data in a system in which the meta data is delivered from a delivering apparatus having a function to deliver the meta data which is described in a structured language, to a user apparatus, and the meta data is used, comprising: an external server other than the delivering apparatus, collecting the meta data from the delivering apparatus; the user apparatus making a meta data obtaining request to the external server, the request comprising a designation by a relative position from a predetermined element of an element to customize, which element exists in a predetermined location of a description of the structured language of the meta data to be obtained, as well as a format designation designating a variable to be located in the element and a format thereof; and the external server every time dynamically replacing the contents of the corresponding element of the description of the structured language of the meta data to be outputted, with a value corresponding to the variable and the format designated by the format designation, based on the designation of the element and the format designation, according to different requests from respective user apparatuses. 7. The meta data customizing method as claimed in claim 6 , comprising: the external server previously collecting the meta data from a plurality of the delivering apparatuses.