Origin for each line in src/mkid.txt from check-in c1ddb4c814:

c1ddb4c814 2021-03-01    1: % dynamical identifiers
c1ddb4c814 2021-03-01    2: for i:=1:5 do set (mkid (z, i), i);
c1ddb4c814 2021-03-01    3: for i:=1:5 do write mkid (z, i);
c1ddb4c814 2021-03-01    4: for i:=1:5 sum mkid (z, i);
c1ddb4c814 2021-03-01    5: end;