I wish there was a good, language-agnostic, editor-agnostic way to have comments with relative links to other source files in the same project and the editor will just do the right thing. If I just put my point on something that looks like a relative path and I hit the open file command, that path will be set as the default and it makes it really easy to include links to related files for easy navigation, but I haven't found anything that would work well for my co-workers using VS Code or similar.