I have BB installed on my old computer and would use it to search blocks. I could import the blocks into EQ and get all of the information that EQ generates. No instructions. I have not used it in over a year -- but I was missing it (since it saves me having to draw the block -- if I have a specific block in mind). I know that you can get many of them on the web, but it is great to already have them in digital format. IMHO it is a great resource.