# gauss.sty
# dani, 13.03.2009
\add[summand]{z/s}{z/s}
\add{z/s}{z/s}
\begin{gmatrix}
\begin{gmatrix}[b]
\begin{gmatrix}[B]
\begin{gmatrix}[p]
\begin{gmatrix}[v]
\begin{gmatrix}[V]
\colops
\mult{z/s}{factor}
\rowops
\swap{z/s}{z/s}
