Could anyone please tell me what is the comments given in the matlab code?

function y=IWT(x)  
x=imread('lenna.gif'); 
subplot(2,3,1);imshow(x);title('Ô*ͼÏñ'); 
x=double(x); 
y=x;  
[hp,lp]=size(x); 
hc=hp/2;  lc=lp/2;
%----------------ÆæżÁÐÖØÅÅ 
for n=1:lc          
    j=n*2-1;          
    y(:,n)=x(:,j);         
    y(:,lc+n)=x(:,j+1); 
end 
subplot(2,3,2);imshow(uint8(y)); title('ÆæżÁÐÖØÅÅ');
%-----------------ÐÐÖØÅÅ  
for n=1:lc         
    y(:,lc+n)=y(:,lc+n)-y(:,n); 
end  
for n=1:lc         
    k=y(:,lc+n)/2-mod(y(:,lc+n)/2,1);       
    y(:,n)=y(:,n)+k; 
end 
subplot(2,3,3);imshow(uint8(y));title('ÐÐÖØÅÅ');  
%---------------ÆæżÐÐÖØÅÅ 
x=y;
for n=1:hc         
    j=n*2-1;          
    y(n,:)=x(j,:);          
    y(hc+n,:)=x(j+1,:);  
end 
subplot(2,3,4);imshow(uint8(y));title('ÆæżÐÐÖØÅÅ'); 
%---------------ÁÐÖØÅÅ 
for n=1:hc          
    y(hc+n,:)=y(hc+n,:)-y(n,:); 
end  
for n=1:hc          
    k=y(hc+n,:)/2-mod(y(hc+n,:)/2,1);          
    y(n,:)=y(n,:)+k; 
end  
subplot(2,3,5);imshow(uint8(y));title('ÁÐÖØÅÅ');
%----------------Öظ´ÉÏÊö²½Ö裬½øÐжþ´ÎѹËõ  
for n=1:lc          
    j=n*2-1;         
    y(:,n)=x(:,j);          
    y(:,lc+n)=x(:,j+1); 
end   
for n=1:lc           
    y(:,lc+n)=y(:,lc+n)-y(:,n); 
end 
for n=1:lc           
    k=y(:,lc+n)/2-mod(y(:,lc+n)/2,1);        
    y(:,n)=y(:,n)+k;
end   
x=y;  
for n=1:hc      
    j=n*2-1;      
    y(n,:)=x(j,:);       
    y(hc+n,:)=x(j+1,:); 
end  
for n=1:hc    
    y(hc+n,:)=y(hc+n,:)-y(n,:); 
end  
for n=1:hc       
    k=y(hc+n,:)/2-mod(y(hc+n,:)/2,1);     
    y(n,:)=y(n,:)+k; 
end
%----------------ÔÙ½øÐÐÆæżÐÐÖØÅźÍÁÐÖØÅÅ  
x=y;  
for n=1:hc    
    j=n*2-1;     
    y(n,:)=x(j,:);   
    y(hc+n,:)=x(j+1,:); 
end   
for n=1:hc  
    y(hc+n,:)=y(hc+n,:)-y(n,:); 
end 
for n=1:hc     
    k=y(hc+n,:)/2-mod(y(hc+n,:)/2,1);     
    y(n,:)=y(n,:)+k; 
end
subplot(2,3,6);imshow(uint8(y));title('¶þ´ÎѹËõ ');