Built-in bookmarks

Hi, guys! How is it possible to create this internal bookmarks within the audio file?
bookmark mp3.png

Hi vinist

I’m assuming that you are listening to your audio book in Audacity. If so, then you can create a bookmark at anytime in the playback by pressing ctrl and B

To save the bookmark, and to later resume where you left off - save the book in Audacity’s own format *.aup3.
label track.jpg