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Here are a couple of sites I have used in the past (and present for reference) to expand my knowledge of DOS BAT commands and techniques. &nbsp;Bookmark these for reference, and also check out the links related to this question.<br />
<br />
<a href="http://ss64.com/" rel="ugc">http://ss64.com/</a><br />
<a href="http://ss64.com/nt/delayedexpansion.html" rel="ugc">http://ss64.com/nt/delayedexpansion.html</a><br />
<a href="http://ss64.org/viewtopic.php?id=985" rel="ugc">http://ss64.org/viewtopic.php?id=985</a><br />
<br />
<a href="http://www.dostips.com/" rel="ugc">http://www.dostips.com/</a><br />
<a href="http://www.dostips.com/DtTutoFramework.php" rel="ugc">http://www.dostips.com/DtTutoFramework.php</a><br />
<br />
<i><b>~bp</b></i>
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Here are a couple of sites I have used in the past (and present for reference) to expand my knowledge of DOS BAT commands and techniques.  Bookmark these for reference, and also check out the links related to this question.

http://ss64.com/ [http://ss64.com/]
http://ss64.com/nt/delayedexpansion.html [http://ss64.com/nt/delayedexpansion.html]
http://ss64.org/viewtopic.php?id=985 [http://ss64.org/viewtopic.php?id=985]

http://www.dostips.com/ [http://www.dostips.com/]
http://www.dostips.com/DtTutoFramework.php [http://www.dostips.com/DtTutoFramework.php]

~bp

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I've explained some of the context in my article <a href="https://www.experts-exchange.com/articles/673/Advanced-DOS-batch-pitfalls.html" rel="ugc">https://www.experts-exchange.com/articles/673/Advanced-DOS-batch-pitfalls.html</a>&nbsp;.
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I've explained some of the context in my article https://www.experts-exchange.com/articles/673/Advanced-DOS-batch-pitfalls.html [https://www.experts-exchange.com/articles/673/Advanced-DOS-batch-pitfalls.html] .

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May I ask what led you to grading with &quot;B&quot; only?
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May I ask what led you to grading with "B" only?

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I am very sorry. Must be a mistake since i was in a hurry! It was surely an &quot;A&quot;.
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I am very sorry. Must be a mistake since i was in a hurry! It was surely an "A".

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<div class="content wysiwyg-content">
setlocal ENABLEDELAYED EXPANSION - what does this actually do? <br />
<br />
Can anyone help me understand in detail?
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setlocal ENABLEDELAYED EXPANSION - what does this actually do? 

Can anyone help me understand in detail?

setlocal ENABLEDELAYED EXPANSION

Batch files are text files containing a script of commands that are executed by the command interpreter on DOS, OS/2 and Windows systems. Most commonly, they are used to perform a series of functions that are repeated -- copying a set of files created daily with one step, for example.