\newcommand{\vx}{\ensuremath{\mathbf{x}} }
\newcommand{\vu}{\ensuremath{\mathbf{u}} }
\newcommand\tabstart{\begin{tabular}{|p{0.12\columnwidth}|
p{0.04\columnwidth}|
p{0.1\columnwidth}|
p{0.449\columnwidth}|
p{0.1\columnwidth}|}
\hline}
\newcommand\tabend{\end{tabular}}
\newcommand\optinfile{--in-file & -i & string & input file name & (none) \\\hline}
\newcommand\optreffile{--ref-file & -r & string & reference file name & (none) \\\hline}
\newcommand\optoutfile{--out-file & -o & string & output file name & (none) \\\hline}
\newcommand\optoutbase{--out-base & -o & string & output file name base - a number and the type name will be added automatically& (none) \\\hline}
\newcommand\opttypetwod{--type & -t & string & output image file type (see Table \ref{tab:2dformats}) & png \\\hline}
\newcommand\opttypetwodb{--type & -t & string & output image file type (see Table \ref{tab:2dformats}) & exr \\\hline}
\newcommand\opttypethreed{--type & -t & string & output image file type (see Section \ref{tab:3dformats}) & vista \\\hline}
\newcommand\opthelpplugin{--help-plugins & & & print out all plugins and a short description & \\\hline}
\newcommand\plugtabstart{\begin{tabular}{|p{0.1\columnwidth}|p{0.1\columnwidth}|p{0.5\columnwidth}|p{0.1\columnwidth}|}\hline}
\newcommand\miamex{{\tt miamex} }
\newcommand{\tw}[1]{{\tt #1}}