How to Disable Code Preview Popup on Hover over Code Fold in Eclipse?

When I use Eclipse to code Java programs, I can fold a block of codes, for example: a method or a comment. And When I fold the block, there will be a "plus(+)开发者_运维问答" mark appearing on the left side of the editor in Eclipse. If you hover your mouse over the mark, Eclipse will pop-up a frame showing those folded codes. I feel it's annoying, but I can not find an option to disable it. Is there an option to disable it?

thanks, mate!

I don't think this can be disabled right now (Eclipse 3.5)

You can disable popup on "javadoc hovering" (sort of), but not on folder marks.