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This more empathetic , user-based approach ensures that administrative solutions are designed and built around what works for taxpayers . XUL has been around and working for years , and not significantly changed the world of web application development . This finding is illustrated by our analysis of conversations around two works by Maya Angelou , I Know Why the Caged Bird Sings ( 1969 ) , read and discussed early in the master 's course , and Gather Together in My Name ( 1973 ) , read later , after the course ended and participants formed a voluntary book club . In a departure from standard tape-recorded tours , which tend to cluster large groups around certain works along a predetermined route , ArtPhone enables visitors to choose , by pressing the unit 's pushbuttons , the item or room about which they wish to learn . No doubt some of the riders around me worked in the city 's factories assembling the high-end doodads I use on my Trek .