NON-TRANSITORY COMPUTER-READABLE MEDIUM STORING SELECTED CHARACTER SPECIFICATION PROGRAM, SELECTED CHARACTER SPECIFICATION METHOD, AND SELECTED CHARACTER SPECIFICATION DEVICE

A non-transitory computer-readable medium storing a selected character specification program that causes a computer to execute a process including detecting a character region indicating a region, in which each character of the displayed character string is displayed on a screen, based on character string display information, specifying a stroke of a closed curved line designated on the screen based on input operation information, and specifying one or a plurality of successive characters, in which a ratio of an area of a selected region based on uppermost, lowermost, leftmost, and rightmost points of the stroke of the closed curved line in the character region to an area of the character region exceeds a threshold, as selected character among a respective character of the displayed character string overlapped with the stroke of the closed curved line.