Origin for each line in src/mkid.txt from check-in 5ce5316a33:

5ce5316a33 2021-03-01    1: % dynamical identifiers
5ce5316a33 2021-03-01    2: for i:=1:5 do set (mkid (z, i), i);
5ce5316a33 2021-03-01    3: for i:=1:5 do write mkid (z, i);
5ce5316a33 2021-03-01    4: for i:=1:5 sum mkid (z, i);
5ce5316a33 2021-03-01    5: end;