1. A document editing device comprising: an operation module that receives a character decoration type as a search-target from a user; a display module that displays an editing document which contains character strings; and a control module that searches a character string of the editing document for a character decoration type of the searched character string that is identical to the search-target.
1. A document editing device comprising: an operation module that receives a character decoration type as a search-target from a user; a display module that displays an editing document which contains character strings; and a control module that searches a character string of the editing document for a character decoration type of the searched character string that is identical to the search-target. 2. The document editing device according to claim 1 , wherein the control module collectively converts the character decoration type of all character strings, the character strings being determined by the search to be set with the character decoration type identical to the search-target, into a conversion character decoration type specified by an operation of the operation module by the user.