A computer system and method is disclosed as a support structure for patients with hypertension or prehypertension to encourage life style changes leading to dietary control, increase exercise and blood pressure control. The attenuated pathogenic bacteria are engineered to secrete the antigen into the periplasmic space of the bacteria or into the environment surrounding the bacteria. Each blade iron has a blade mounting portion and a removable blade fastener. Further, the deterioration of interleaving performance of the compressed mode frames during such observation can be suppressed. The keyboard allows a typist to be mobile while inputting data into a computer processor. The processor may be configured to display the electronic textbook data with the at least one configurable problem on the display, selectively change at least one of the parameters of the system to define a new solution for the at least one configurable problem based upon the user input device, and display the new solution on the display.