I hover over stdlib:
M-. and it asks me:
Visit tags table (default TAGS):
I don't have one of those. I see a lot of information about TAGS in the emacs documentation: https://www.emacswiki.org/emacs/TagsFile#tags_file
But what should I use, CTAGS, ETAGS, Universal CTags, Global Tags? Should I set this up in the makefile or in a key binding?