+ self._calcsuppress = False
+ self._unit_sort_direction = False
+ self._value_sort_direction = False
+ self._units_sort_direction = False
+
+ self._find_result = [] # empty find result list
+ self._find_count = 0 # default to find result number zero
+
+ self._selected_category = '' # preset to no selected category
+ self._selected_units = {} # empty dictionary for later use