diff --git a/20.test/40.partials/textbook.en.md b/20.test/40.partials/textbook.en.md
new file mode 100644
index 000000000..59e6b3c8e
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+++ b/20.test/40.partials/textbook.en.md
@@ -0,0 +1,4 @@
+```php
+// Tutorial about PHP
+$course = "Welcome to the PHP course!";
+```