FUNCTION: LieTools/gExponents
USAGE: gExponents(Gt); gExponents(); gExponents(Gtype,rnk);
SYNOPSIS: gExponents(Gt) returns the exponents of a simple Lie algebra Gt. 
  If a global Lie algebra environment has been initialized (via a call to
  LieTools[gSetup]), gExponents may be called without any arguments.
EXAMPLE: 
> LieTools[gSetup](G,2);
Setting up Gtype = G   rnk = 2
> LieTools[gExponents]();

                                [1, 5]

> LieTools[gExponents](E6);

                         [1, 4, 5, 7, 8, 11]


SEE ALSO: 
