[Newbies] Panic

What does one do in Squeak to stop an infinite loop? If one takes a flying leap at it and: 1) hits anything inside the Smalltalk window nothing happens. 2) hits Ctrl-Alt-Del enough times, selects Task Manger then stops Squeak then next time it opens it says it can't write to the changes file until this is fixed [ok]

How does a beginner fix that?

As a somewhat not brand new beginner, I recall Dolphin Smalltalk has a panic button for this. Does Squeak have anything except trying to file out one's code, delete and reload Squeak?

Thanks.

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