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12-01.md

@@ -128,18 +128,22 @@ matter what register is used.) **MOV AX, [BX+DI]** and **MOV CL,
 
 As an example, you might adhere to this rule by replacing the code
 
-    LoopTop:
-        add  ax,[bx+si]
-        add  si,2
-        dec  cx
-        jnz  LoopTop
+```nasm
+LoopTop:
+    add  ax,[bx+si]
+    add  si,2
+    dec  cx
+    jnz  LoopTop
+```
 
 with this
 
-        add  si,bx
-    LoopTop:
-        add  ax,[si]
-        add  si,2
-        dec  cx
-        jnz  LoopTop
-        sub  si,bx
+```nasm
+    add  si,bx
+LoopTop:
+    add  ax,[si]
+    add  si,2
+    dec  cx
+    jnz  LoopTop
+    sub  si,bx
+```