XML document reference, item_details.cgi, 313
XML, importance of, 287
XML program example
DBI module, 288
Do_SubTable subroutine, 290
end_tag subroutine, 289-290
execute method, 291
fetchrow_array method, 291
Gen_Output function, 289
Get_Keys function, 289-291
overview, 287
prepare method, 292
Print_Data function, 289-290, 292
program listing, 296-298
start_tag subroutine, 289
strict module, 288
warning switch, 288
XML header tag, 289
XML output example, 295
xml_esc subroutine, 294
xml_esc_name subroutine, 293
xml_esc subroutine, photo_dumper.pl, 294
xml_esc_name subroutine, photo_dumper.pl, 293
XMLin function
item_details.cgi (product catalog program), 313
item_details.cgi (shopping cart program), 403
XML::Simple module
item_details.cgi (product catalog program), 312
item_details.cgi (shopping cart program), 401
X-Y graph plotting, 332