It allows you to move back and forth between Stacks 4 and Stacks 5 more reliably.
RapidWeaver itself allows you to mark an entire Stacks page as a draft. Once marked, the page will not be included in the navigation or the published site, allowing you to work on complex layouts in private. Version Requirements OS Compatibility: macOS 10.12 Sierra or newer. Stacks (RapidWeaver plugin) 4.3.0
Specifically optimized for RapidWeaver 8 and RapidWeaver Classic. It allows you to move back and forth