1. A document processing apparatus, including a processor, comprising: an attachment unit that attaches a comment to an electronic document as additional information at a first position in a body of the electronic document and that modifies the electronic document to include a modification at a second position in the body of the electronic document; a processing unit that determines, in response to a user's input indicating that the modification has been made by the user based on a content of the comment, that the electronic document is modified by the user accessing the electronic document to include the modification based on the content of the comment and associates the comment with the modified place information indicating the second position at which the electronic document is modified, a character string at the second position prior to the modification, and a character string at the second position after the modification, in response to determining that the document is modified based on the content of the comment; and a storage unit that stores the associated information in a database.
1. A document processing apparatus, including a processor, comprising: an attachment unit that attaches a comment to an electronic document as additional information at a first position in a body of the electronic document and that modifies the electronic document to include a modification at a second position in the body of the electronic document; a processing unit that determines, in response to a user's input indicating that the modification has been made by the user based on a content of the comment, that the electronic document is modified by the user accessing the electronic document to include the modification based on the content of the comment and associates the comment with the modified place information indicating the second position at which the electronic document is modified, a character string at the second position prior to the modification, and a character string at the second position after the modification, in response to determining that the document is modified based on the content of the comment; and a storage unit that stores the associated information in a database. 3. The document processing apparatus according to claim 1 , further comprising: a display that displays the electronic document; and a display control unit that controls the display to display the modification at the second position distinguishably.