Section 8: Program Editing137
When you set the HP-41C to line 8 and pressed    to delete the PSE , the program was altered ...
  ...from this...    
 
  ...to this.    
 
 
  00    
  00    
   
  01 LBLTAREA     
  01 LBLTAREA     
   
  02 STO 01    
  02 STO 01    
   
  03 X 2    
  03 X 2    
   
  04 PI    
  04 PI    
   
  05 *    
  06 2    
  07 *     
  05 *    
  06 2    
  07 *     
One PSE deleted here.
  08 PSE    
  08 X<>Y     
   
  09 X<>Y      
  09 RCL 01     
 
  10 RCL 01     
  10 *     
 
  11 *      
  11 PI     
 
  12 PI      
  12 *     
 
  13 *      
  13 2     
These instructions all moved up.
  14 2      
  14 *     
 
  15 *      
  15 PSE     
 
  16 PSE      
  16 +     
 
  17 +      
  17 END     
 
  18 END      
       
   
Now to delete the PSE instruction at line 15:
Keystrokes Display    
g GTO · 015 
  15 PSE    
   
   
  14 *    
  The PSE is deleted from line 15 and the HP-41C displays line 14. Subsequent instructions move up.
PRGM 
  8,092.7427    
  Takes the HP-41C out of PRGM
mode.
Run AREA in USER mode (press LOG ) for two cylindrical water heaters with the following dimensions:
1.329 meters (h), 0.4811 meter (r).  
(Answer: 5.4716 square meters.)  
17.24 feet (h), 9 feet (r).  
(Answer: 1,483.8370 square feet.)  
In the HP-41C is another editing function that allows you to delete lines from your programs. This function is DEL (delete lines). When you execute DEL , the HP-41C prompts you for a three-digit line number like this: DEL _ _ _ . This three-digit number specifies a