One of the most bizarre new content types in Blackboard 9 is a blank page. As you can guess, it is exactly what it says.
I’m not sure of why you would need this content type since when would you want to post empty content (a blank page, if you will). If you do want to post content (begging the question of its “blankness”), this content type basically mirrors adding a regular content item in Blackboard. In other words, a blank page is duplicate functionality.
The only difference between the two content types is that a “blank” page forces a user to click on it to view the content while a normal content item displays initially.