Can we embed computable document format files from Mathematica to the forum here? Would be nice don't you guys think? Mathematica has the free CDF player and I understand it's possible to embed CDF files in any web page. Here's the demo from Mathematica if this would be something the adminstrators would be interested in looking into: http://www.wolfram.com/cdf/adopting-cdf/authoring-cdf/ For example, consider the log branch plot below. It's difficult for students to understand branching in Complex Analysis. However, having the ability to rotate that plot interactively, provides what I think is a great tool to better understand this concept. But the plot is static below and not very helpful as it stands. It's easy to create CDF files in Mathematica. However, when I attempt to attach a sample CDF file here, I get an invalid file error. Just think it would be a classy addition to the forum if it's possible.