class PDecayChannel: public TObject

 Contructs an 'empty' channel (indicated by 'Daughters' containing
 a NULL pointer).

 The 'Next' element is set to NULL. The old value (i.e. the pointer
 to the next possible decay mode) is returned.

 If the current channel is empty, it is filled with the contents of
 'newchannel'. The object pointed to by 'newchannel' is deleted and
 the value of 'newchannel' is replaced by a pointer to the current
 channel.
 If the current channel is not empty, but has no successor in 'Next',
 'Next' will point to 'newchannel'.
 If the current channel contains a 'Next' object, the add request
 is passed to this one.
 The other AddChannel functions work in the same way. The channel is
 filled in the order current channel, 'Next' pointer and 'Next' object.

 The channel describes a decay into 1 daughter particle with particle id
 d1 and branching ratio w.
 (This strange case is implemented only for completeness.)

 The channel describes a decay into 2 daughter particles with particle
 ids d1, d2 and branching ratio w.

 The channel describes a decay into nd daughter particles with particle
 ids stored in the integer array ld and branching ratio w.

 The channel describes a decay into 1 daughter particle represented by
 a pointer to PParticle d1 and branching ratio w.
 (This strange case is implemented only for completeness.)

 The channel describes a decay into 2 daughter particles represented by
 pointers to PParticle d1, d2 and branching ratio w.

 The channel describes a decay into 3 daughter particles represented by
 pointers to PParticle d1, d2, d3 and branching ratio w.

 The channel describes a decay into 4 daughter particles represented by
 pointers to PParticle d1, d2, d3, d4 and branching ratio w.

 The channel describes a decay into nd daughter particles represented by
 pointers to PParticle stored in the array ld and branching ratio w.

 The channel describes a decay into 1 daughter particle represented by
 its name d1 and branching ratio w.
 (This strange case is implemented only for completeness.)

 The channel describes a decay into 2 daughter particles represented by
 their names d1, d2 and branching ratio w.

 The channel describes a decay into 3 daughter particles represented by
 their names d1, d2, d3 and branching ratio w.

 The channel describes a decay into 4 daughter particles represented by
 their names d1, d2, d3, d4 and branching ratio w.

 The channel describes a decay into nd daughter particles represented by
 an array of their names ld and branching ratio w.

 Returns the branching ratio.

 The contents of 'number' is replaced by the number of daughter particles
 and the pointer to the daughter array is returned.

 Returns the 'Next' element, i.e. the succeeding channel.

 Returns the 'last' element in the list.

 Prints the channel information.

 Add one decay channel by referencing an existing one.

 Add one decay channel by giving the weight and the particle ids. In
 case of more than four particles one could also use a array of ids
 together with its length.