Those are probably inside the emacs info path, check this link out for more details
https://www.emacswiki.org/emacs/InfoPath
But basically, emacs uses either an environment variable INFOPATH (you can check this one using echo $INFOPATH
in the terminal) or, if the first isn't defined, a variable named Info-default-directory-list
in emacs. You can check the latter typing it in any buffer and pressing C-x C-e with the cursor after it. The folder will show up in the small message box in the bottom of the emacs window.
Mine is /usr/share/info
, but I'm not sure if this changes in other distros.