 
 
1.         scratch  pen  set pen size to 1, pen down, pen up, change pen color by 10, change color effecd by 25, change pen size by 1        
2.                     
3.scrath          
  
1. pen  set pen size to 1, pen down, pen up, change pen color by 10, change color effecd by 25, change pen size by 1        
2.scrath         
  
1.       if ... then ... else            
2.         go to mouse pointer, point towards mouse pointer    
  
                                  
 
   
  
1. 

2.                 
3.      
   
when clicked
set pen size to 1
forever
go to mouse pointer
point towards mouse pointer
if mouse down
then pen down
change color effect by 25          
else pen up
     
when 2 key pressed
change pen size by 1
      
when 1 key pressed
change pen color by 10
chage color effecd by 25
change pen size by -1
  
when space key pressed
clear
5.     25  
6.       5  
7.      3  
8. 
     
 
1       
2.            
3.             