I get stuck in the middle of an operation and cannot figure out how to break out of it. The console becomes stuck and I cannot use this program at all

* hello
* LKJmweaaoruhewjroiwehjrrrrrrrrrrr
* 
* 
* 
* 
* 
* werae
* 
* when this happens. 

It looks like this.

How can I break out and continue working? A semi-colon does not work.

I do not mean how do I quit the program. I know how to do this.

This is the same question in another language: https://stackoverflow.com/questions/27591417/iex-how-to-cancel-multiline-command