Patent ID: 8312388

Claim:
An information processing apparatus comprising: a display device; a hardware processing unit that operates upon data and provides data for display on the display device; an operation acquisition module that acquires an operation to an electronic file displayed on the display device, the operation to be acquired by the operation acquisition module being set previously; a thumbnail image creating module that creates a thumbnail image corresponding to the acquired operation; a thumbnail image storing control module that controls the thumbnail image so as to store the thumbnail image associated with specifying information by which the electronic file is specified; and an importance determining module that determines an importance of the acquired operation, wherein the thumbnail image storing control module controls the thumbnail image so as to store the thumbnail image associated with the specifying information and the determined importance, and the thumbnail image storing control module controls the thumbnail image so as to preferentially store the thumbnail image which corresponds to the operation whose importance is determined to be high so that the stored number of thumbnail images for the electronic file is equal to or smaller than a given number within a given period.