I just started learning Mathematics, and was given a notebook. There is a cell with 'text' format, but there is one line that is a command, so I change that line into 'input' format, and press 'Shift+Enter', but still couldn't evaluate that line.

And I found that within the whole cell, I cannot click anywhere to display a 'horizontal line' for which I can start typing input. Also, the cell bracket has two horizontal lines on the top, so does it mean that I cannot evaluate any lines in such a cell? And have to start a new cell?

Any help is appreciated!


closed as off-topic by Alexey Popkov, m_goldberg, happy fish, bbgodfrey, MarcoB Mar 19 '17 at 15:38

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." – Alexey Popkov, m_goldberg, happy fish, bbgodfrey, MarcoB
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 2
    $\begingroup$ "Text" style has Evaluatable -> False option so you can not. $\endgroup$ – Kuba Feb 6 '17 at 21:48
  • $\begingroup$ can you copy the command in the text, and paste into the input cell to evaluate it? $\endgroup$ – Nasser Feb 6 '17 at 23:34
  • $\begingroup$ @Nasser yes, if I paste it in a new cell, I can evaluate it $\endgroup$ – J.Y Feb 6 '17 at 23:36