There are many variable naming conventions, covering both how to name and
how to capitalize variables%
\footnote{The author favors \texttt{capsOnNewWords}. Some people use \texttt{underscore\_to\_separate\_words}.
Many use uppercase letters to specify constants like \texttt{PI} or \texttt{GOLDEN\_MEAN}.
Some people always \texttt{StartWithCapatalization}. What's really important
is to be consistent, so you don't have to guess whether the variable you're
thinking of is \texttt{coefFriction}, \texttt{CoefFriction}, \texttt{COEF\_FRICTION},
or something else.%
}. It is a good idea to adopt a standard. If you are working with a group,
you may wish to discuss it in your group and agree on a convention.
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