What symbolic devices does Osborne use in Look Back in Anger and with what effect?

The Bears-and-Squirrels Game, a Symbolic DeviceThe bears-and-squirrels game in Look Back in Anger occupies a special place. It is a symbolic device which serves an important dramatic purpose. According to a critic, this game is a brave attempt by Jimmy and Alison to compensate themselves for the failure of their marriage.
As such, the game is a kind of "extended metaphor". As we witness this