PA0465 Console Scientific Calculator Program

                                                            
  By interrupting under 'RECTOPOL' on line 14 the values    
  in operand fields 1 and 2 are interpreted as x and y      
  coordinates and are converted into r and theta coordinates
  in operand fields 4 and 5.                                
  If one interrupts under the  on the left the text will   
  change to 'POLTOREC'. Now interrupting under this field   
  will convert r and theta values in operand fields 4 and   
  5 into x and y coordinates in operand fields 1 and 2.