If you want to embed an iFrame into a Blackboard 9.1 page, you'll need to grab the code from whatever source you want (YouTube, Vimeo, Google Docs, etc.) and use the Build Content option in Blackboard. Select "Item" under the "Create" menu and turn off the Text Editor so that you can properly paste the code in. Take a look at this tutorial to see all the steps in action.
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