"Source: Text/LieTheory/GrpCox.text";
"Line: 2176";
"Date: Fri Sep 26 12:10:11 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/LieTheory/GrpCox.text, line: 2176
// Example: H108E28 ()
print "Example: H108E28";
ei := GetEchoInput();
SetEchoInput(true);
W := CoxeterGroup("B3");
act := CorootAction(W);
act([1,-2,1], W.1);           
SetEchoInput(ei);
