How to use Cursor in existing large project with a lot of files

I have many existing projects which span over several folders and sometimes hundreds of files. How to make the best use of Cursor in that case? For example, I would like to ask “where is https communication implemented” or to ask Cursor to analyze some behavior without precisely knowing which files contribute to that (so, I don’t know which specific files to add to the context, but rather to include all).

Just use CMD + Enter (on mac) when you chat with it and it will search all your files.

Yes, what @robbis95 is saying and also using the @codebase feature is great for this use case

Both suggestions seem to work. Thanks a lot!