4. The document control apparatus according to claim 1 , wherein the electronic document comprises: control information of an electronic document including the information of the document control period; attached information of an electronic document including summary information of a document and/or index information; and a body of an electronic document transmitted from the external apparatus.
4. The document control apparatus according to claim 1 , wherein the electronic document comprises: control information of an electronic document including the information of the document control period; attached information of an electronic document including summary information of a document and/or index information; and a body of an electronic document transmitted from the external apparatus. 5. The document control apparatus according to claim 4 , wherein the electronic document stored in the storage device comprises link information instead of the body of the electronic document, the link information indicating a location of the body of the electronic document.