I disagree. Words have meaning. 'Open source' means 'open source' in all contexts. For comparison, https://doc.rust-lang.org/book/ https://doc.rust-lang.org/bo

I disagree. Words have meaning. 'Open source' means 'open source' in all contexts. For comparison, https://doc.rust-lang.org/book/ https://doc.rust-lang.org/book/ is an open source book. A PDF with a CC license without a repo of the publishing artifacts is not an open source book. It's just a free book.