Issue #11974:  Add tutorial section on class and instance variables
(Based on a patch from Renee Chu.)
diff --git a/Misc/ACKS b/Misc/ACKS
index 9787d8e..6f0ef6b 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -238,6 +238,7 @@
 Lita Cho
 Anders Chrigström
 Tom Christiansen
+Renee Chu
 Vadim Chugunov
 Mauro Cicognini
 David Cinege