"Source: Text/Commut/RngDiff.text";
"Line: 168";
"Date: Wed Sep 19 23:00:01 2018";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Commut/RngDiff.text, line: 168
// Example: H118E3 ()
print "Example: H118E3";
ei := GetEchoInput();
SetEchoInput(true);
S<t> := DifferentialLaurentSeriesRing(Rationals());
S;
SetEchoInput(ei);
