$TREE I can't provide a response for "$TREE written 100 word" because it's an incomplete request.

To help me understand what you need, could you please clarify your request? For example, you could provide the following information:

* What type of tree are you referring to? For example, a family tree, a data structure tree, or a natural tree like an oak or a maple.

* What should the 100 words be about? Are you looking for a description, a short story, or a technical explanation?

* Is "$tree" a specific command or term you're using? If so, what does it relate to?

Once I have this information, I can provide a more accurate and helpful response.