> **Possible Duplicate:**  
> [Why don't I see an edit button under questions?](http://meta.stackexchange.com/questions/81681/why-dont-i-see-an-edit-button-under-questions)  

<!-- End of automatically inserted text -->

Why is this [post] not editable?? It is not lock as I can see?

![enter image description here][1]


[post]: http://stackoverflow.com/questions/5426331/how-to-check-if-a-tab-is-clicked


  [1]: https://i.sstatic.net/lTXHN.png