URLs Generated by Forms:

• Form: http://machine/file.cgi?arguments
  where arguments are of the form name=value&name=value...

• Some data conversion issues:
  • Spaces are converted to +
  • Special characters are converted to %nn (hex codes)
  • Browsers differ in how they treat newlines in text; some give \n, others \r, others \r\n

• We have a library that handles the arguments for our own forms
  (at /u/www/root/admin/bin/cgi.pl)
  • Use print &mime_header(); to print the content type
  • Use %data = &get_data(); to get the arguments
  • Use $data{name} to access the data
  • Use (keys %data) to get the names of the items present

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