diff --git a/docs/topics/debug.rst b/docs/topics/debug.rst
index d1991c02f..f93aa2c72 100644
--- a/docs/topics/debug.rst
+++ b/docs/topics/debug.rst
@@ -18,11 +18,13 @@ Consider the following scrapy spider below::
             )
 
         def parse(self, response):
-            # collect `item_urls`
+            # <processing code not shown>
+            # collect `item_urls` 
             for item_url in item_urls:
                 yield scrapy.Request(item_url, self.parse_item)
 
         def parse_item(self, response):
+            # <processing code not shown>
             item = MyItem()
             # populate `item` fields
             # and extract item_details_url