How to hide one specific cell (input or output) in IPython Notebook?

Question

Is there a way to selectively hide one specific input or output cell in IPython notebook?

I could only find the below code to show / hide all input cells.

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Answer 1

Finally found it's possible using this extension.

https://github.com/ipython-contrib/IPython-notebook-extensions/blob/master/usability/hide_input.js