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This will create routing helpers such as +magazine_periodical_ads_url+ and +edit_magazine_periodical_ad_path+.
+h3. Breaking Up a Large Route File
+
+If you have a large route file that you would like to break up into multiple files, you can use the +#draw+ method in your router:
+
+<ruby>
+draw :admin
+</ruby>
+
+Then, create a file called +config/routes/admin.rb+. Name the file the same as the symbol passed to the +draw+ method). You can then use the normal routing DSL inside that file:
+
+<ruby>
+# in config/routes/admin.rb
+
+namespace :admin do
+ resources :posts
+end
+</ruby>
+
h3. Inspecting and Testing Routes
Rails offers facilities for inspecting and testing your routes.