                     
                       .

	        
  .     
    ,  
   -    , 
       
.
	        :

-------------------------------------
| ............            |
| .............            |
| ..(,,).....            |
| ..(,,)..            |
|./ (+/-).....            |
| ..(,,)..            |
-------------------------------------

F1  F2/+  F10 

	     
.  " "  ,  
        "
".       
    ,    
 ,     .
	  " "  " " 
    .    
  "-" (: -,12,17),     
      
 .   "-" ,    
,      
  .
	      F2  
 :
	    
--------------------------------
|    ?|
|                         |
--------------------------------
	    
----------------------------------
|    ?|	
|                           |
----------------------------------

	    "Enter".    
 :

---------------------------------------
|    ?|
|                                |
---------------------------------------

	   "",    
   .
