User guide

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Items with either OO or “Object Oriented” or “Object-Oriented” on one line.
OO|([oO]bject( |\-)[oO]riented)
To search for characters other than letters or digits put a “\” in front of them.
S\/SL
These examples were taken from the following web page:
http://www.csci.csusb.edu/dick/samples/egrep.html
You can also find helpful information at
http://en.wikipedia.org/wiki/Regular_expression