I have a code that I developed in nltk, but I don't know how to highlight text on nltk. It works well on the terminal, but it doesn't tell the user before it changes the words. I have also not found any article that talks about implementing nltk on the web. I have spent 3 months looking for an article on the web. They all talk about the terminal. But I have now built a website on Web2py where I plan to implement the code. Help me on highlighting the text, and warning the user before changing the words.