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handlers, forms, 64–69
checkboxes, 65–67
hidden fields, 68
image buttons, 68–69
radio buttons, 65
scrolling text boxes, 67–68
select boxes, 67
handling errors. See error handling
hash sign (#), 34
hashes. See structures
headers (e-mail), 758–759
hidden fields (form handlers), 68
high-level design
Bulletin Board, 159–161
Knowledge Bank, 223–230
Online Appraisal, 439–443
Purchase Management, 649–652
Recruitment System, 338–341
Sales Data Analyst, 766–770
Worldwide Search, 553–561
HTML (Hypertext Markup Language), 7
e-mail, 742–743
upload form, 203–207
HTTP (Hypertext Transfer Protocol), 7
HTTP authentication (Web servers), 109–110
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