When I click in the green box and press Shift + Enter nothing happens. I am using a macbook with OS X El Captain. Is there other keys I can press?
closed as off-topic by happy fish, mikado, Edmund, Feyre, m_goldberg Sep 18 '16 at 21:23
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question arises due to a simple mistake such as a trivial syntax error, incorrect capitalization, spelling mistake, or other typographical error and is unlikely to help any future visitors, or else it is easily found in the documentation." – happy fish, mikado, Edmund, Feyre, m_goldberg
The screenshot is showing the CDF player running as a browser plugin. It's not Mathematica.
The CDF player does not allow you to run Mathematica code. It can only view notebooks and run specially prepared CDF files. Evaluating arbitrary code is not possible. You need the full version of Mathematica for that.