Under normal use, the handheld system screen does not crack. If excessive pressure is applied or an impact occurs to the hand held screen the LCD screen and/or the system case may crack or be damaged. The Limited Warranty for the handheld system does not cover physical damage, including damage to the LCD screen.
Making the world better, one answer at a time. Katakana was developed by Buddhist monks in the Heian period (794-1185). They were derived from shorthand forms of certain kanji that shared the same pronunciation.
The Five Kata were created by Itosu Anko from older Kata. The Katas were designed to instill specific gross motor skills and a sense of body movement specific to his style of training for younger students trying to learn his style of Karate. The original Kata names were Pinan and the first and second Kata of the Heian series were reversed originally.