other minors

1 files changed, 3 insertions, 2 deletions

diff --git a/ReckonPrimer.activity/display.py b/ReckonPrimer.activity/display.py
index 55fd6af..bed71e9 100755
--- a/ReckonPrimer.activity/display.py
+++ b/ReckonPrimer.activity/display.py
@@ -21,9 +21,10 @@ class Display:
     def __init__(self, window):        
         self._permanent_gui_elements(window)
         self.errors = 0
-        self._ex = None
+        self._ex = None        # WN091214 ???
+        self._ex_key = None    # 
         self._sett = None      # setting updated by callbacks during input
-        self.running = False   # first round of calculations
+        self.running = False   # first round of calculations WN091214 ???
 
     def register(self, sess, co, learner):
         """register _after_ Session and Coach have been instantiated"""