The motif of windows and doors being left open or locked is significant in the text. A Wuthering Heights PDF allows you to track these instances. They often symbolize the characters' emotional states - open to love or closed off in bitterness. By searching for "door" or "window" in the digital file, you can map out this pattern. It is a subtle detail that adds depth to the reading experience. Literary analysis becomes an engaging activity when you have the tools to uncover these hidden structural elements within the electronic text.