Patent Document ID: 9244890
Application ID: 13762872

Base Claim:
1. An electronic device, comprising: a display; a memory; and a processor; wherein the memory stores an illustration including a character string and an expository content linked to the character string in the illustration; wherein the processor is configured to perform processing of: specifying a character string in an illustration displayed on the display; displaying an expository content linked to the specified character string; highlighting an arbitrary character string in the displayed illustration with a highlighter according to a user operation; when an expository content linked to a character string highlighted with the highlighter is displayed on the display, detecting the same character string in the displayed expository content as the character string highlighted with the highlighter and highlighting the same character string with a highlighter; when an illustration is displayed on the display according to a user operation, displaying a character string highlighted with a highlighter in invisible form; when a character string highlighted with a highlighter is displayed on the display, displaying a character string highlighted with a highlighter in invisible form; cancelling the invisible display of a character string highlighted with a highlighter according to a user operation when the illustration is displayed; and cancelling the invisible display of a character string highlighted with a highlighter according to a user operation when the expository content linked to the specified character string is displayed.

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Claim 2:
2. The electronic device according to claim 1 , wherein: the memory further stores dictionary data in which each headword and expository content of the headword is associated, and the processor is configured to further perform processing of: reading out from dictionary data stored in the memory an expository content having a headword to which the specified character string in the illustration is linked as the headword, and displaying the read-out expository content; when an expository content having, as a headword, a character string other than a character string highlighted with a highlighter is displayed on the display, highlighting the headword of the displayed expository content with a highlighter according to a user operation; and when the headword of the expository content is highlighted with a highlighter, highlighting a character string in an illustration from which a link with the headword originates with a highlighter.