FUNCTIONS: LieTools/swgt2CW
USAGE: swgt2CW(swgt,Gt); swgt2CW(swgt); swgt2CW(swgt,Gtype,rnk);
SYNOPSIS:swgt2CW(swgt,Gt) takes a weight of Gt expressed in terms of a basis
  of simple roots and produces its equivalent expression in the form used
  by the Coxeter/Weyl package. When called with a single argument, swgt, it
  is necessary to first initialize a global Lie algebra environment (see 
  LieTools[gSetup]).  

EXAMPLE: 
> sw := LieTools[CW2swgt](e1-e3,A2);

                             sw := [1, 1]

> cw := LieTools[swgt2CW](sw,A2);

                            cw := e1 - e3


SEE ALSO: LieTools[CW2swgt], LieTools[CW2fwgt], LieTools[fwgt2CW]
