The Page-Frame design is based on the idea of cooperating with
the function of the web browser to achieve easy navigation. For this purpose, four buttons are added to the beginning and
the end of the page as shown in Figure-java1.
They are:
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The Audio-Play button enable the student to play the audio parts of the text in his own pace. The Index-Page button links to the index page of the course. The Previous_Page button links to the previous page of the text. The Next_Page button links to the next page of the text.