How to use the "help" cursor property?

The W3C allows different CSS cursor properties.

Some of them are really common, and I think a majority of users understand them because they saw them per default on any website (text when the text can be selected, pointer for a link, etc.).

But I don't know what to think about the help cursor.

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W3C says :

help

  • Help is available for the object under the cursor. Often rendered as a question mark or a balloon.

I'd like to know what the user expects when he gets this cursor. A tooltip ? A link ? Nothing ?

Do you have any information / research about the user experience with this cursor ?

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