Here is the description from the product page:
“With Blueprint, Flex and Flash developers can now query for sample code just as easily as they use auto-complete. Blueprint brings the power of the entire Web inside of the Flex Builder 3 Development environment and provides sample-centered search results that allow the user to quickly look through many different examples from many different websites including documentation, blogs, and forums.”
And below you can see some screenshots of Flex Builder on my system.
This is how you access the new feature:
I placed the cursor after showFlexChrome, and clicked the Blueprint icon. The results appear shortly thereafter.