
Allowed codes include 
<br/><i>2212 = p</i>, <i>-2212 = pbar</i>, 
<br/><i>2112 = n</i>, <i>-2112 = nbar</i>, 
<br/><i>211 = pi^+</i>, <i>-211 = pi^-</i>, <i>111 = pi^0</i>,  
<br/><i>990 = Pomeron</i> (used in diffractive machinery;
here mainly for debug purposes),
<br/><i>11 = e^-</i>, <i>-11 = e^+</i>, 
<br/><i>13 = mu^-</i>, <i>-13 = mu^+</i>, 
<br/>and a few more leptons/neutrinos in a few combinations.
  

<p/><code>mode&nbsp; </code><strong> Beams:idB &nbsp;</strong> 
 (<code>default = <strong>2212<