explain the theme of forgiveness in the play.

Shakespearian comedies are known for themes of forgiveness and reconciliation at the end. Characters find out whom and what they thought were not as they had seemed. I can't, off the top of my head, think of a total number of forgiven people in As You LIke It. I know that Orlando forgives his brother Oliver for his mistreatment. The others just discover love and, like Duke Senior, a better way to live. The elemental Forest of Arden has much to do with the healing qualities that the characters experience by the end of the play. That theme is another discussion though.

in this play the theme of forgiveness is figured out very well. Orlando forgives his tyrannical brother Oliver, forgetting all the bad treatment done to him. This is the only example of forgiveness in this play. Otherwise duke senior was never unhappy or angry with his brother, never did he mention any word which showed his frustration towards his brother so there was no chance of forgiving.