Origin for each line in src/example02.red from check-in c1ddb4c814:

c1ddb4c814 2021-03-01 jeff@gridfini: u:=(x+y+z)^3;
c1ddb4c814 2021-03-01 jeff@gridfini: on factor; u;
c1ddb4c814 2021-03-01 jeff@gridfini: df(x^x,x);
c1ddb4c814 2021-03-01 jeff@gridfini: int(ws,x);
c1ddb4c814 2021-03-01 jeff@gridfini: sin(pi/4);
c1ddb4c814 2021-03-01 jeff@gridfini: sin(x)^2+cos(x)^2;
c1ddb4c814 2021-03-01 jeff@gridfini: trigsimp ws;
c1ddb4c814 2021-03-01 jeff@gridfini: v:=sqrt(pi);
c1ddb4c814 2021-03-01 jeff@gridfini: on rounded; v;
c1ddb4c814 2021-03-01 jeff@gridfini: precision(24); v;
c1ddb4c814 2021-03-01 jeff@gridfini: off rounded;
c1ddb4c814 2021-03-01 jeff@gridfini: end;
c1ddb4c814 2021-03-01 jeff@gridfini: