diff --git a/hello_tile/hello_tile.c b/hello_tile/hello_tile.c
index f74c2f9..cdec0eb 100644
--- a/hello_tile/hello_tile.c
+++ b/hello_tile/hello_tile.c
@@ -52,7 +52,7 @@ void display(void)
     PutDrawEnv(&draw[db]);
     // We're using a reverse OT, so we want to display the last item first. See PsyQ's LibRef47.pdf, p.277
     DrawOTag(&ot[db][OTLEN - 1]);
-    // Uncomment the following line to use a regular oredered OT. Uncomment l.100 accordingly
+    // Comment above line, and uncomment the following line to use a regular oredered OT. Comment l.71 and Uncomment l.73 accordingly
     //~ DrawOTag(ot[db]);
     db = !db;
     nextpri = primbuff[db];
@@ -69,17 +69,17 @@ int main(void)
     {
         // Initialize the reversed ordering table. This means the elements at index OTLEN - 1 is drawn first.
         ClearOTagR(ot[db], OTLEN);
-        // Use regular order OT, uncomment l.77 accordingly
+        // Use regular order OT, uncomment l.53 accordingly
         //~ ClearOTag(ot[db], OTLEN); 
         // yellow_tile is before pink and blue tile in the code, 
         // and it displays behind because it is added to a different ot index (od[db] + OTLEN - 1)
-        // Using a Regular or Reverse OT will have an effect on drawing order. (See lines 77 and 100)
+        // Using a Regular or Reverse OT will have an effect on drawing order. (See lines 53 and 73)
         yellow_tile = (TILE * ) nextpri;                   // yellow_tile is a pointer to primbuf content at adress nextpri, that's cast (type converted) to a TILE struc.   
         setTile(yellow_tile);                              // initialize the TILE structure ( fill the length and tag(?) value )
         setXY0(yellow_tile, CENTERX - 32 , CENTERY - 48);  // Set X,Y
         setWH(yellow_tile, 128, 40);                       // Set Width, Height
         setRGB0(yellow_tile, 255, 255, 0);                 // Set color
-        addPrim(ot[db] + OTLEN - 1, yellow_tile);                    // Add primitive to ordering table
+        addPrim(ot[db][OTLEN - 1], yellow_tile);           // Add primitive to ordering table
         nextpri += sizeof(TILE);     
         // blue_tile added at od[db] + OTLEN - 2
         blue_tile = (TILE * ) nextpri;                  // blue_tile is a pointer to primbuf content at adress nextpri, that's cast (type converted) to a blue_tile struc.   
@@ -87,18 +87,18 @@ int main(void)
         setXY0(blue_tile, CENTERX - 16, CENTERY - 32);   // Set X,Y
         setWH(blue_tile, 32, 64);                        // Set Width, Height
         setRGB0(blue_tile, 60, 180, 255);                // Set color
-        addPrim(ot[db] + OTLEN - 2, blue_tile);                      // Add primitive to ordering table
-        nextpri += sizeof(TILE);                    // Increment the adress nextpri points to by the size of TILE struct
+        addPrim(ot[db][OTLEN - 2], blue_tile);           // Add primitive to ordering table
+        nextpri += sizeof(TILE);                         // Increment the adress nextpri points to by the size of TILE struct
         // pink_tile is after blue_tile in the code, 
         // so it is drawn before, thus under blue_tile.
         // However, it is added at the same ot index (od[db] + OTLEN - 2)
         // so using a Regular or Reverse OT won't have an effect on drawing order.
         pink_tile = (TILE * ) nextpri;                  // pink_tile is a pointer to primbuf content at adress nextpri, that's cast (type converted) to a TILE struc.   
         setTile(pink_tile);                              // initialize the TILE structure ( fill the length and tag(?) value )
-        setXY0(pink_tile, CENTERX, CENTERY - 64);   // Set X,Y
+        setXY0(pink_tile, CENTERX, CENTERY - 64);        // Set X,Y
         setWH(pink_tile, 64, 64);                        // Set Width, Height
         setRGB0(pink_tile, 255, 32, 255);                // Set color
-        addPrim(ot[db] + OTLEN - 2, pink_tile);                      // Add primitive to ordering table
+        addPrim(ot[db][OTLEN - 2], pink_tile);           // Add primitive to ordering table
         nextpri += sizeof(TILE);     
         FntPrint("Hello tile !");
         FntFlush(-1);