"Source: Text/LieTheory/RootDtm.text";
"Line: 2608";
"Date: Fri Sep 26 12:10:11 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/LieTheory/RootDtm.text, line: 2608
// Example: H107E27 ()
print "Example: H107E27";
ei := GetEchoInput();
SetEchoInput(true);
R  := RootDatum("A1A1");
R1 := sub<R|[1]>;
R2 := sub<R|[2]>;
R1 + R2;
R1 join R2;
SetEchoInput(ei);
