Activating node navigation for an info file

Heime <[email protected]>
Newsgroups gmane.emacs.help
Message-ID <5a5yTm10FKVG6KG2bLG97cXWeHHp785Whiu3Th-dUutvzL21buQ7xc4WIJgdx_EEH6liKGe34Nm7rO8wMTbOExwIfDq5db54kdnEDMyj8ho=@protonmail.com>
Have opened your generated antares.info file as a raw text buffer. 
I then switched to texinfo-mode, but the only change is in some
highlighting.

How do I get to view normally, by node - as seen when looking at 
the manuals?
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