Added XXX remarks.
diff --git a/Lib/stdwin/HVSplit.py b/Lib/stdwin/HVSplit.py
index 2ee18f2..36192a7 100755
--- a/Lib/stdwin/HVSplit.py
+++ b/Lib/stdwin/HVSplit.py
@@ -1,6 +1,10 @@
# HVSplit contains generic code for HSplit and VSplit.
# HSplit and VSplit are specializations to either dimension.
+# XXX This does not yet stretch/shrink children if there is too much
+# XXX or too little space in the split dimension.
+# XXX (NB There is no interface to ask children for stretch preferences.)
+
from Split import Split
class HVSplit() = Split():