r switch to allow resonance decays; on/off = true/false.
Normal hadrons and leptons do not count as resonances, so this is 
aimed specifically towards <i>Z^0, W^+-, t, h^0</i> and similar
objects beyond the Standard Model. Do not use this option if you
may produce coloured resonances and intend to allow hadronization,
since currently the program would not know how to handle this.
  

<p/>
It is possible to stop the generation immediately after the basic 
process has been selected, see <code>PartonLevel:all<