"Source: Text/LieTheory/GrpRfl.text";
"Line: 1485";
"Date: Fri Sep 26 12:10:11 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/LieTheory/GrpRfl.text, line: 1485
// Example: H109E17 ()
print "Example: H109E17";
ei := GetEchoInput();
SetEchoInput(true);
R := StandardRootSystem("A", 4);
W := ReflectionGroup(R);
Rank(W);
assert $1 eq 4;
Dimension(W);
assert $1 eq 5;
SetEchoInput(ei);
