Q: I found your answer to the walking the marker question (4/7)
interesting. But I had one problem with it. I've heard the term
marker before, but I'm still not totally sure what a marker is
or how it works. Can you please explain? Thanks!
Read the answer here:
<a href="http://tinyurl.com/jsbv2">
http://tinyurl.com/jsbv2</a>
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