'public' text files

I know how javascript files in the ‘public’ section of the sidebar work… and how they are not public per-se but imported into Site or Page code.

However the support article also talks about public TEXT files, so I wonder how they are supposed to work, or if it’s just a slip up in the docs:

hi Martin,

This feature is a relic from an older version of Wix code.
It allows you, for example, to store a long string as a publicly accessible file.
You use it just like other public/backend files.