PA0465 Console Scientific Calculator Program

                                                           
  If you have the stack turned on (It defaults to being on 
  when you enter the page.), the result of any successful  
  calculation or function call is placed on the stack which
  can contain up to 30 values. (DECTOHEX results are the   
  exception in that they are not placed on the stack.)     
  The stack can be displayed on the storage scope by       
  interrupting under the appropriate field on line 10.     
  Any empty stack locations will be displayed as a zero.   
  The actual number of values in the stack is displayed on 
  line 12. Using the appropriate fields on line 11 and 12  
  values can be moved between the stack and the operand    
  fields.