in reply to Regular Expression to replace & in XML

It is easy: 
#windows double quotes!
perl -e "print $ARGV[0]=~s/&#//r" "<Marks>BALANCE OF AMOUNT RECEIVED F
+ROM H&#</Marks>"
<Marks>BALANCE OF AMOUNT RECEIVED FROM H</Marks>

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L*

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

In Section Seekers of Perl Wisdom