diff --git a/docs/framework/dimensions.rst b/docs/framework/dimensions.rst
index 35354605..8d17a720 100644
--- a/docs/framework/dimensions.rst
+++ b/docs/framework/dimensions.rst
@@ -67,7 +67,7 @@ but can be added to or subtracted from quantities.
 The result will always be a quantity point of the same dimension:
 
 .. code-block::
-    :emphasize-lines: 3-4
+    :emphasize-lines: 3-5
 
     Length auto dist1 = 2q_m;
     Length auto dist2 = 1q_m;
@@ -80,6 +80,7 @@ The result will always be a quantity point of the same dimension:
     You can't subtract a quantity from a quantity point:
 
     .. code-block::
+        :emphasize-lines: 3
         Length auto dist1 = 2q_m;
         Length auto dist2 = 1q_m;
         auto res1 = dist1 - quantity_point{dist2};  // ERROR
@@ -87,6 +88,8 @@ The result will always be a quantity point of the same dimension:
 We can also substract two quantity points.
 The result is a relative quantity of the same dimension:
 
+.. code-block::
+    :emphasize-lines: 3
     Length auto dist1 = 2q_m;
     Length auto dist2 = 1q_m;
     Length auto res1 = quantity_point{dist1} - quantity_point{dist2};