[OS X TeX] Optional arguments

[Michael Sharpe]

> On Jun 18, 2016, at 1:15 PM, Nitecki, Zbigniew H. <Zbigniew.Nitecki at tufts.edu> wrote:
> 
> > \newcommand{\colocross}[4]{\ColoredOverEdge[\strandcolor{#4}]{#1}{#2}{#3}%overcross (same data)

That should be 

\newcommand{\colocross}[4]{\ColoredOverEdge[\strandcolor{#4}]{#1}{#2}{#3}}%overcross (same data)

I don't have the macro packages you use so can't check whether this solves all problems.

Michael
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