Types of attributes used in XML UI. Note that, in accordance with XML formatting rules, all parameters, regardless of their type, must be enclosed in double quotes. * string - any string; "blah", "foo", "whatever" * boolean - "true" or "false" * int - an integer number; "0", "1", "-5" * float - a floating-point number; "0", "0.2", "1.0", "-1.23456789"