added a note about the self variable before 0.9.9

diff --git a/doc/02-Twig-for-Template-Designers.markdown b/doc/02-Twig-for-Template-Designers.markdown
index cc60bf9..92b9b85 100644 (file)
--- a/doc/02-Twig-for-Template-Designers.markdown
+++ b/doc/02-Twig-for-Template-Designers.markdown
@@ -106,7 +106,7 @@ If a variable or attribute does not exist you will get back a `null` value
 
 Twig always references two special variables (mostly useful for macros):
 
- * `_self`: references the current template;
+ * `_self`: references the current template (was `self` before 0.9.9);
  * `_context`: references the current context.
 
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