"Source: Text/LieTheory/GrpRfl.text";
"Line: 1719";
"Date: Fri Sep 26 12:10:11 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/LieTheory/GrpRfl.text, line: 1719
// Example: H109E22 ()
print "Example: H109E22";
ei := GetEchoInput();
SetEchoInput(true);
W := ReflectionGroup("A~2 D4");
IsFinite(W);
assert not $1;
IsCrystallographic(W);
assert $1;
IsSimplyLaced(W);
assert $1;
SetEchoInput(ei);
