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Could someone explain me the grammar point of the word "should" in below sentence?

Should you have problems with the installation, please don't hesitate to contact me.

Although I don't know the grammar here but I could construe the meaning of "should" here is same as "if". But I don't know the season why we don't use "if" instead for clarity?

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Yes, it certainly means "if". As far as why anybody would use this construction, you'd have to ask the person who wrote the passage that you quoted. I can certainly think of no good reason ever to use it. But you may be interested in en.wikipedia.org/wiki/English_verbs#Future_subjunctive – user16269 Mar 28 '12 at 10:44
Any word in this sentence can be replaced with a synonym. Every word in your question can be replaced with a synonym. Why did you use these exact words and not something else for clarity? That question has no objective answer. And clarity is in the eye of the beholder anyway. – RegDwighт♦ Mar 28 '12 at 11:29
I have no idea why this question is closed. Why is this not a suitable question. This is a perfectly legitimate question. If the person had the perfect language skills to ask the question, he/she would not need to ask it. C'mon, Stop being trigger-happy. – Blessed Geek Mar 29 '12 at 1:35
Thanks David Wallace. That's exactly what I'm looking for. I have encountered this use of "should" many times but I haven't found out a place in order to explain myself which grammar point is being used there. That's why I put my question here (thanks Stack Exchange). Maybe my words aren't native English but I argue I point out my meaning clearly. – bnguyen82 Mar 29 '12 at 4:44
A similar usage (langsff.com/userfiles/file/Company%20Formation%20form.pdf) I find on Internet Should you have any problems or questions when completing this form please do not hesitate to contact Langs Facts n Figures on 01752 881 900 or – bnguyen82 Mar 29 '12 at 5:09

closed as not constructive by RegDwighт♦ Mar 28 '12 at 11:28

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