Patent ID: 8886618
Filing Date: 2014-11-11
Classification: G06F

Abstract:
1. A document management apparatus which manages documents and folders as nodes of a first hierarchical structure, the apparatus comprising: a memory for storing first and second tables, wherein the first table is configured to hold positions of the nodes of a current hierarchical structure indicating a current arrangement state of the first hierarchical structure, wherein the second table is configured to hold positions of the nodes of a past hierarchical structure indicating a past arrangement state of the first hierarchical structure, and wherein the positions of the nodes of the past hierarchical structure were held at the time of receipt of a predetermined user instruction to hold, and a user interface configured to display the nodes of the current hierarchical structure in a first display area based on the positions of the nodes of the current hierarchical structure held by the first table, and to display the nodes of the past hierarchical structure in a second display area based on the positions of the nodes of the past hierarchical structure held by the second table, wherein the nodes of the current hierarchical structure in the first display area and the nodes of the past hierarchical in the second display area are displayed together, wherein each of the nodes of the current hierarchical structure in the first display area is displayed with information indicating a corresponding position of the past hierarchical structure, and each of the nodes of the past hierarchical structure in the second display area is displayed with information indicating a corresponding position of the current hierarchical structure.