Clicking onto the element will expand the concealed area, making a more detailed inspection or editing process possible. After expanding, the fold element changes its shape, which can be felt in Braille by getting a different special character. Clicking this character will collapse the folded area again. The function is equivalent to the Edit. If the file was changed after the last store, the System.
Close procedure has to be evoked to close it.
Prof. M ssenb ck for the support in this work. Thanks also to Mr. P cksteiner for his outstanding work which offered a solid basis for the development and application of the system. Although the use of the system has not been evaluated scientifically the success of the users shows that Oberon2Braille could be recommended for teaching purposes. The Oberon System, User Guide and Programmer s Manual. P cksteiner, Ch.