How can i create a private post?

[fkromer]

@bep

Not sure how private it has to be (Hugo creates RSS feeds, sitemap etc., so it will show up somewhere), but the easiest way is maybe to:

How much information of a post is contained in the RSS feeds, sitemap etc.? Is it possible to disable some of the features which could leak info?

Would it be possible to have the post public and to hyperlink a file in a private GitHub repository?