I decided to finally get into the Myst series and chose to start with Myst Masterpiece Edition. Looking through the manual, it mentions a help menu, but I can't seem to access it no matter what I do. Has using ScummVM removed the ability to access it?

Running the cursor along the top of the window doesn't reveal anything useful?

No, running the cursor along the top of the window doesn't do anything. Alt+F5 doesn't work, it just brings up the options.