Literary critics have the duty of reading the play or short story in order TO GIVE THEIR OPINION about its general content. They usually pay attention to some details such as the setting, the plot, the theme, etc. When interpreting, they make reference to all these aspects and focus mainly on the theme since it refers to the deeper meaning of the story.
They intercept whatever's on the page. Sometimes they see subtext or something between the lines that the author may or may not have intended, or they take an event or confrontation and intercept it as the subject doing a certain thing.
