Changing ~ to true when it activates a system (for clarity)

symfony/framework-bundle/3.3/config/packages/framework.yaml

@@ -1,7 +1,7 @@
 framework:
     secret: '%env(APP_SECRET)%'
     #default_locale: en
-    #csrf_protection: ~
+    #csrf_protection: true
     #http_method_override: true
 
     # Enables session support. Note that the session will ONLY be started if you read or write from it.
@@ -9,8 +9,8 @@ framework:
     session:
         handler_id: ~
 
-    #esi: ~
-    #fragments: ~
+    #esi: true
+    #fragments: true
     php_errors:
         log: true
 

symfony/framework-bundle/3.3/config/packages/test/framework.yaml

@@ -1,4 +1,4 @@
 framework:
-    test: ~
+    test: true
     session:
         storage_id: session.storage.mock_file