After years of frantic scrolling, I've just discovered that RRS 2025 and the Case Books in WS pdf form are fully bookmarked with links to each Part and each Case.
Click the Bookmark icon on the right hand margin and you can open the Bookmark navigation pane, which will allow you to jump directly to any desired rule section or Case.
Thank you.
WS>Our Sport>Racing Rules of Sailing> The Case Book
WS>Inside World Sailing>Regulations and Policies>Racing Rules of Sailing>The Case Book
https://d7qh6ksdplczd.cloudfront.net/sailing/wp-content/uploads/2025/07/31104846/WS-Case-Book-2025-2028-v2025-07.pdf