This is a review of the PDF download, not of the game Call of Cthulhu
I own multiple physical copies of this book, and I wanted to replace the low-quality PDF I've been using for digital purposes with a high-quality, company-supporting version.
This PDF version is clear and crisp, exactly what I was wanting in its purchase. However, it DOES NOT come with ANY bookmarks for chapters or tables or anything. If I'm paying this kind of money for a professional PDF release, I'm disappointed that it does not include the navigation features that make a digital book easy to page through. Since it is a protected, watermarked document, I cannot add the bookmarks myself, which severely impacts its functionality during sessions.
I do not recommend purchasing this PDF version of the rulebook. Instead, buy the physical copy -- if you're going to have to manually rifle through the pages of the book due to no navigation, might as well do it with a physical copy.