Graphic user interfaces (GUI) have remarkably contributed to improvement in easiness with which to use various information processing devices. In general GUIs, icons representative of various data items and a folder icon representative of a folder for holding one or more data items are shown on a monitor. By moving any data icon by means of a so-called drag and drop operation to the display position of a folder icon, it is possible to hold the data in the folder. With an operation to hold a plurality of data items in a common holder, the user can group the data items.
However, according to a conventional GUI, a troublesome operation is required in grouping a plurality of data items as a holder needs to be initially produced by executing a command for producing a new holder.
The present invention has been conceived in view of the above, and aims to provide an information processing device, a user interface method, and an information storage medium for grouping a plurality of data items through an easy operation.