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 eac9458..d2bbebe 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -235,6 +235,7 @@
 Matt Chisholm
 Anders Chrigström
 Tom Christiansen
+Renee Chu
 Vadim Chugunov
 Mauro Cicognini
 David Cinege