What is Bono's function in Fences?

I think that Bono's function in the play is a hopeful
one.  His purpose is to show that there can be redemption within the psyche of
individuals no matter how difficult external conditions may be.  It is here in Bono's
character where there is hope.  While Troy might be psychologically incapable of
happiness or simply emotionally impotent to escape his own "fences," Bono has found
happiness, a contentment with where he is in his consciousness.  His love for his wife
is evident, even though she is not a character in the drama.  His ability to center
himself emotionally is also evident in how he consistently counsels Troy to stop in his
affair with Alberta.  Bono is a force of redemption, a sense of hope.  If Wilson does
not include the presence of Bono, then the reality is that men like Troy, who are
besieged with social and emotional challenges, would be shown to be incapable of
happiness.  Bono forces the recognition that individuals do have freedom and autonomy. 
Bono compels the reader/ audience to believe that individuals can act in the hope of
escaping the "fences" that prevent them from enjoyment of life.  While it is a small
character and not to the level of Troy in the play, Bono's role is significant in this
regard.  In a cold and cruel world, there can be moments where individuals transcend
"fences," escape their "walking blues," and find some happiness in a world that severely
lacks it.