17. models of the system


Experiment with the 'back' button on different browsers, help systems, etc. Record systematically the behaviour as you visit pages and use the 'back' button, and try to build a model (informal or formal) of the system. Pay particular attention to what happens if you revisit the same page during the same 'drill down' and the behaviour in systems with multiple windows/frames. (Note that this behaviour does differ dramatically even between different versions of the same web browser.)

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Other exercises in this chapter

ex.17.1 (ans), ex.17.2 (ans), ex.17.3 (ans), ex.17.4 (ans), ex.17.5 (tut), ex.17.6 (tut), ex.17.7 (tut), ex.17.8 (tut), ex.17.9 (tut)

all exercises for this chapter