Artificial intelligent assistant

Expressing doing something in case of/as a precaution for some other possible occurrence I see that is an expression that means "just in case" in general, but how does one express "I'm going to do A in case B happens"? For example, "I'm writing in pencil in case I make a mistake." Would that be translated simply as , or is there a better way to capture the nuance of doing something expressly for the purpose of insurance against some other possible occurrence?

> "I'm writing in pencil in case I make a mistake."

How about...

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or maybe...

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Example:



Take your umbrella in case it rains.

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