问题
When authoring an Apple Help Book for a macOS application, it is difficult to see the changes because macOS caches the help books for performance reasons. You can launch your app and open the help, and you see an old version.
How can I clear this cache to immediately see the changes I make on my help books?
回答1:
To clear the cache of a help book you just updated, you need to install the new build of your app into the Applications folder. Launch the newly installed app and you should get the updated help book. That usually does the trick.
来源：https://stackoverflow.com/questions/62465800/refresh-apple-help-book-cache