This question already has an answer here:

Here is the phrase from Wikipedia:

CFO Peter Klein has said that Microsoft has no alternate plan should its current mobile strategy fail.

Another example:

Should Microsoft’s tablet and phone efforts continue to inspire little interest among the buying public, don’t expect a radical shift in strategy.

What does the word should mean in this context? The same as if or in case?

Why is this verb placed before the subject?

I tried to search in dictionaries, but this specific case wasn’t properly explained.

marked as duplicate by tchrist, Andrew Leach, Jim, James Waldby - jwpat7, FumbleFingers Mar 10 '13 at 22:11

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