7. The method according to claim 2 , wherein the onscreen representation in the text browsing mode is made during a first stage from a start of the obtaining operation of the page to a time of completion of acquisition of text data of the page, and wherein the operation for canceling the switching of the onscreen representation is allowed in a certain time period from completion of acquisition of the definition information.
7. The method according to claim 2 , wherein the onscreen representation in the text browsing mode is made during a first stage from a start of the obtaining operation of the page to a time of completion of acquisition of text data of the page, and wherein the operation for canceling the switching of the onscreen representation is allowed in a certain time period from completion of acquisition of the definition information. 8. The method according to claim 7 , wherein the operation for canceling the switching of the onscreen representation is not allowed in the first stage, and operation for canceling acquisition of the data of the page is allowed in the first stage.