"FIGS. 34a and 34 b together are a flow chart of the steps performed by microprocessor 88 when set button 322 and one of memory buttons 270, 272, 274 are pressed to store in memory 96 the settings related to the position of frame sections 91, 93 and related to the pressures within air bladders 74, 76, 78, 80." . . . . .