answer must by in soft copy form.use 3rd edition of book Human Computer Interaction by ALAN DIX,JANET FINLAY

EXERCISES In contrasting the read-evaluation loop and the notification-based paradigm for inter- active programs, construction of a pre-emptive dialog was discussed. How would a programmer describe a pre-emptive dialog by purely graphical means? (Hint: Refer to the discussion in Sec- tion 8.5 concerning the shift from external and independent dialog management to presentation control of the dialog) 8.I