1. An information processing device comprising: a display device; instruction position detecting means with an operating face provided on the display screen of said display device, for accepting an instruction operation from a user and detecting and outputting coordinate information indicating an instructed position corresponding to said instruction operation; detecting means for detecting, in the event that a tracing operation has been performed as to said operating face of said instruction position detecting means, amount-of-operation and operation direction with a starting position of said tracing operation as a reference, based on said coordinate information from said instruction position detecting means; and operating symbol display control means for displaying operating symbols at predetermined positions of the display screen of said display device so as to change in accordance with tracing operations of a user, and also for changing the display mode of said operating symbols such that tracing operations of the user are recognizable, based on detection output from said detecting means.