class PDecayManager: public TObject

 ContructPChannel is used internally to construct a new PChannel from
 parent particle *p and the decay channel *c1 and store it in the
 ToDo stack of PReactionList *RL.
 If CopyFlag is set, the particle *p is copied before using. This
 is necessary for the top channel.

 utility function for PrintReactionList

 add/assign/get a specific decay channel to one particle either by
 particle id, by an instance of PParticle or just by name

 set the default decay channel for this particle (according to PDG)

 clear the channel

 by specifying one start particle InitReaction does look for all
 possible decay chains and lists them in ReactionList. The initial
 decay channel can be given either by a special decay channel or,
 if it is a standard particle, the standard decay channel can be used.

 GetNextReaction calls the constructor of PReaction for the next
 reaction in ReactionList. The given parameters are forwarded
 to the constructor. If wf is set, the weight stored in the reaction
 list is transfered to the initial particle; each reaction is simulated
 with the same nb. of events, product particles have a proper weight set.
 The second form is obsolete (and implies wf=0)

 loop does a loop over all possible reaction channels and write
 the output in a file name.root. The arguments are the same as
 in GetNextReaction.

 GetCurrentWeight provides the weight factor of the actual
 reaction

 prints out the decay channel list

 print out information for one specific particle

 visualize the decay chains

These interfaces are analogue to PReaction: