I downloaded this demonstration

The source code can be previewed here However, when I download the NB file, I cannot get access to this said code. All I can see is the output.

I'm obviously missing something.

  • $\begingroup$ Double-click the brackets on the right side of the notebook to expand the hidden contents. $\endgroup$
    – phosgene
    May 16, 2014 at 21:45
  • $\begingroup$ @phosgene it works, thank you very much. $\endgroup$ May 16, 2014 at 21:46

1 Answer 1


Double-click on the cell bracket to expand it. The arrow on the bracket indicates that it is closed and can be expanded downwards.

enter image description here


Not the answer you're looking for? Browse other questions tagged or ask your own question.