# assert(16);
alias mars.fcmonth = marsForecastMonth;
unalias mars.step;

alias mars.origin = centre;
alias mars.method = methodNumber;

if (class is "od") { alias mars.system = systemNumber; }
if (class is "me") { alias mars.system = systemNumber; }
if (class is "en") { alias mars.system = systemNumber; }
if (class is "c3") { alias mars.system = systemNumber; }