echo ' -dc Maximise derivative (not integral) causality'
echo ' -i <implicit|euler|rk4> Use implicit, euler or rk4 integration'
echo ' -o ode is same as dae'
echo ' -oct use oct files in place of m files where appropriate'
echo ' -opt optimise code generation'
echo ' -p print environment variables'
echo ' -partition partition hierachical system'
echo ' -pdf generate pdf in place of ps'
echo ' -r reset time stamp on representation'
echo ' -s try to generate sensitivity BG (experimental)'
echo ' -ss use steady-state info to initialise simulations'
echo ' -stdin read input data from standard input for simulations'
echo ' -sub <subsystem> operate on this subsystem'
echo ' -t tidy mode (default)'
echo ' -u untidy mode (leaves files in current dir)'