diff --git a/src/graphics/grid.c b/src/graphics/grid.c
index f3649c1..db7f47d 100644
--- a/src/graphics/grid.c
+++ b/src/graphics/grid.c
@@ -82,42 +82,32 @@ void write_marks_along_space_ridges (long x, long y, long z)
 
     int vertex_offset = 8;
 
-    graphics_write_line (vertex_offset + 0,  vertex_offset + 6); //
-    graphics_write_line (vertex_offset + 1,  vertex_offset + 7); //
+    /* graphics_write_line (vertex_offset + 0,  vertex_offset + 16); */
+    /* graphics_write_line (vertex_offset + 1,  vertex_offset + 17); */
+    /* graphics_write_line (vertex_offset + 2,  vertex_offset + 18); */
+    /* graphics_write_line (vertex_offset + 3,  vertex_offset + 19); */
+    /* graphics_write_line (vertex_offset + 4,  vertex_offset + 20); */
+    /* graphics_write_line (vertex_offset + 5,  vertex_offset + 21); */
+    /* graphics_write_line (vertex_offset + 6,  vertex_offset + 22); */
+    /* graphics_write_line (vertex_offset + 7,  vertex_offset + 23); */
 
-    graphics_write_line (vertex_offset + 2,  vertex_offset + 3); //
-    graphics_write_line (vertex_offset + 4,  vertex_offset + 5); //
+    /* graphics_write_line (vertex_offset + 0,  vertex_offset + 6); */
+    /* graphics_write_line (vertex_offset + 1,  vertex_offset + 7); */
+    /* graphics_write_line (vertex_offset + 8,  vertex_offset + 10); */
+    /* graphics_write_line (vertex_offset + 9,  vertex_offset + 11); */
+    /* graphics_write_line (vertex_offset + 12,  vertex_offset + 14); */
+    /* graphics_write_line (vertex_offset + 13,  vertex_offset + 15); */
+    /* graphics_write_line (vertex_offset + 16,  vertex_offset + 22); */
+    /* graphics_write_line (vertex_offset + 17,  vertex_offset + 23); */
 
-    graphics_write_line (vertex_offset + 8,  vertex_offset + 9); //
-    graphics_write_line (vertex_offset + 12,  vertex_offset + 13); //
-
-    graphics_write_line (vertex_offset + 10,  vertex_offset + 11); //
-    graphics_write_line (vertex_offset + 14,  vertex_offset + 15); //
-
-    graphics_write_line (vertex_offset + 12,  vertex_offset + 14); //
-    graphics_write_line (vertex_offset + 13,  vertex_offset + 15); //
-
-    graphics_write_line (vertex_offset + 16,  vertex_offset + 22); //
-    graphics_write_line (vertex_offset + 17,  vertex_offset + 23); //
-
-    graphics_write_line (vertex_offset + 18,  vertex_offset + 19); //
-    graphics_write_line (vertex_offset + 20,  vertex_offset + 21); //
-
-    graphics_write_line (vertex_offset + 0,  vertex_offset + 16); //
-    graphics_write_line (vertex_offset + 1,  vertex_offset + 17); //
-
-    graphics_write_line (vertex_offset + 2,  vertex_offset + 18); //
-    graphics_write_line (vertex_offset + 3,  vertex_offset + 19); //
-                                                                  //
-    graphics_write_line (vertex_offset + 4,  vertex_offset + 20); //
-    graphics_write_line (vertex_offset + 5,  vertex_offset + 21); //
-
-
-    graphics_write_line (vertex_offset + 6,  vertex_offset + 22); //
-    graphics_write_line (vertex_offset + 7,  vertex_offset + 23); //
-
-    graphics_write_line (vertex_offset + 8,  vertex_offset + 10);  //
-    graphics_write_line (vertex_offset + 9,  vertex_offset + 11);  //
+    graphics_write_line (vertex_offset + 2,  vertex_offset + 3);
+    graphics_write_line (vertex_offset + 4,  vertex_offset + 5);
+    graphics_write_line (vertex_offset + 8,  vertex_offset + 9);
+    graphics_write_line (vertex_offset + 10,  vertex_offset + 11);
+    graphics_write_line (vertex_offset + 12,  vertex_offset + 13);
+    graphics_write_line (vertex_offset + 14,  vertex_offset + 15);
+    graphics_write_line (vertex_offset + 18,  vertex_offset + 19);
+    graphics_write_line (vertex_offset + 20,  vertex_offset + 21);
 }