I want to add custom attributes to a WP blog (not page, or post!), which are editable as checkboxes from the 'Edit site' page, as on the following picture:
The current values that are selectable are Public, Archived, Spam, Mature, Deleted
. Can I add some custom ones? Is there any hook/function which I could use for this?
I haven't found anything regarding these attributes in the documentation. So far I only encountered with solutions that are valid for posts, or pages (public, draft, private); but not for the sites/blogs themselves.