                            AUTOMATIC CALCULATION                            
                           ~~~~~~~~~~~~~~~~~~~~~~~                           
   This mode works in a  similar  manner to  the  manual  mode  but  PRT Calc
supplies the inputs. To start this mode, highlight item 4 and  press  RETURN. 
PRT Calc will display (and print if enabled) the header and then  prompt  you
for three pieces of information: start, end and interval. For example, If you 
want the results for all values from 50 to 100 in steps of 0.5 then enter  50 
as the start value,  100  as  the  end  and  0.5  as  the interval.  PRT Calc
interprets your input but does not check for out  of  range  values  at  this 
stage (see Valid Keyboard Inputs). PRT Calc then  asks  you to  confirm  your
input and, if OK, it performs all the calculations automatically,  displaying 
(and printing) the results in two columns. It is at this stage  that  out  of 
range warnings are issued in the same manner as the manual mode. 
   Because of it's automatic nature, and the fact that any  results  scrolled 
off the screen will be lost, it is advisable to  always  enable  the  printer 
option before using this mode; assuming, of course, that you have  a  printer 
connected). 
