I want to make my table of contents to have the words "Chapter", "Title" and "Page" written in uppercase, like "CHAPTER", "TITLE" and "PAGE". My document class is Book. How can I do it?
For customizing the table of contents, you could use a dedicated package, such as
If you would like to change certain commonly used names, check if they are stored in a macro. There are common macros such as
If you use the babel package, which is very recommendable, you should do it a bit differently, using the
In your comment you said that you changed the style file. I would never do that since it would have effect on each other file which uses that class or style, respectively. Instead, I would use